% % This file was created by the Typo3 extension % sevenpack version 0.7.14 % % --- Timezone: CEST % Creation date: 2013-06-19 % Creation time: 00-57-45 % --- Number of references % 162 % @Article { 1932, title = {Virtual-reality techniques resolve the visual cues used by fruit flies to evaluate object distances.}, journal = {Current Biology}, year = {2002}, volume = {12}, pages = {1591-1594}, abstract = {Insects can estimate distance or time-to-contact of surrounding objects from locomotion-induced changes in their retinal position and/or size. Freely walking fruit flies (Drosophila melanogaster) use the received mixture of different distance cues to select the nearest objects for subsequent visits. Conventional methods of behavioral analysis fail to elucidate the underlying data extraction. Here we demonstrate first comprehensive solutions of this problem by substituting virtual for real objects; a tracker-controlled 360\(^{\circ}\) panorama converts a fruit fly's changing coordinates into object illusions that require the perception of specific cues to appear at preselected distances up to infinity. An application reveals the following: (1) en-route sampling of retinal-image changes accounts for distance discrimination within a surprising range of at least 8-80 body lengths (20-200 mm). Stereopsis and peering are not involved. (2) Distance from image translation in the expected direction (motion parallax) outweighs distance from image expansion, which accounts for impact-avoiding flight reactions to looming objects. (3) The ability to discriminate distances is robust to artificially delayed updating of image translation. Fruit flies appear to interrelate self-motion and its visual feedback within a surprisingly long time window of about 2 s. The comparative distance inspection practiced in the small fruit fly deserves utilization in self-moving robots.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Schuster, S and Strauss, R and G{\"o}tz, KG} } @Article { 869, title = {Task-specific association of photoreceptor systems and steering parameters in Drosophila}, journal = {Journal of Comparative Physiology A}, year = {2001}, month = {10}, volume = {187}, pages = {617-632}, abstract = {Visual motion processing enables moving fruit flies to stabilize their course and altitude and to approach selected objects. Earlier attempts to identify task-specific pathways between two photoreceptor systems (R1-6, R7+8) and three steering parameters (wingstroke asymmetry, abdomen deflection, hindleg deflection) attributed course control and object fixation to R1-6 mediated simultaneous reactions of these parameters. The present investigation includes first results from fixed flying or freely walking ninaE17 mutants which cannot synthesize the R1-6 photoreceptor-specific opsin. Retention of about 12 percent of the normal course control and about 58 percent of the object fixation in these flies suggests partial input sharing for both responses and, possibly, a specialization for large-field (R1-6) and small-field (R7+8) motion. Such signals must be combined to perceive relative motion between an object and its background. The combining links found in larger species might explain a previously neglected interdependence of course control and object fixation in Drosophila. Output decomposition revealed an unexpected orchestration of steering. Wingstroke asymmetry and abdomen deflection do not contribute in fixed proportions to the yaw torque of the flight system. Different steering modes seem to be selected according to their actual efficiency under closed-loop conditions and to the degree of intended turning. An easy experimental access to abdominal steering is introduced.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Strauss, R and G{\"o}tz, KG and Renner, M} } @Article { 43, title = {Binocular contributions to optic flow processing in the fly visual system.}, journal = {Journal of Neurophysiology}, year = {2001}, volume = {85}, pages = {724-734}, abstract = {Integrating binocular motion information tunes wide-field direction-selective neurons in the fly optic lobe to respond preferentially to specific optic flow fields. This is shown by measuring the local preferred directions (LPDs) and local motion sensitivities (LMSs) at many positions within the receptive fields of three types of anatomically identifiable lobula plate tangential neurons: the three horizontal system (HS) neurons, the two centrifugal horizontal (CH) neurons, and three heterolateral connecting elements. The latter impart to two of the HS and to both CH neurons a sensitivity to motion from the contralateral visual field. Thus in two HS neurons and both CH neurons, the response field comprises part of the ipsi- and contralateral visual hemispheres. The distributions of LPDs within the binocular response fields of each neuron show marked similarities to the optic flow fields created by particular types of self-movements of the fly. Based on the characteristic distributions of local preferred directions and motion sensitivities within the response fields, the functional role of the respective neurons in the context of behaviorally relevant processing of visual wide-field motion is discussed.}, department = {Department G{\"o}tz}, web_url = {http://jn.physiology.org/cgi/reprint/85/2/724.pdf}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R and Egelhaaf, M} } @Article { 33, title = {Drosophila Pax-6/eyeless is essential for normal adult brain structure and function.}, journal = {Journal of Neurobiology}, year = {2001}, volume = {46}, pages = {73-88}, abstract = {A role for the Pax-6 homologue eyeless in adult Drosophila brain development and function is described. eyeless expression is detected in neurons, but not glial cells, of the mushroom bodies, the medullar cortex, the lateral horn, and the pars intercerebralis. Furthermore, severe defects in adult brain structures essential for vision, olfaction, and for the coordination of locomotion are provoked by two newly isolated mutations of Pax-6/eyeless that result in truncated proteins. Consistent with the morphological lesions, we observe defective walking behavior for these eyeless mutants. The implications of these data for understanding postembryonic brain development and function in Drosophila are discussed.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Callaerts, P and Leng, S and Clements, J and Clements, J and Cribbs, D and Kang, YY and Walldorf, U and Fischbach, KF and Strauss, R} } @Poster { 1163, title = {The effect of mirrored visual feedback on the EEG correlates of pointing direction}, journal = {Journal of Vision}, year = {2001}, month = {12}, volume = {1}, number = {3}, pages = {318}, abstract = {Purpose: Looking through laterally mirroring prisms produces at least two changes in the phenomenal appearance of the world: When stretching your right arm, for example, visual feedback will indicate that it is your left arm that is moving. But not only will the 'wrong' limb seem to be moving, it will also move in the diametrically opposite direction. Usually output and feedback of an action 'fit' (i.e., go to and come from the same limb). But when looking through mirroring prisms, visual feedback comes from the opposite arm and opposite direction. In order to behave properly under these circumstances, some kind of recalibration has to occur. The contralateral hemisphere is more strongly involved in controlling these arm movements. It is possible that this recalibration alters the lateralization of the neural activity that controls these movements. To test for this, we recorded event-related potentials (ERPs) and event-related lateralizations (ERLs) of the EEG during pointing movements with and without laterally mirrored vision. Targets were presented either centrally or laterally. Results: We found effects of mirrored vision on the lateralization of neural activity. The relative involvement of the hemisphere ipsilateral to the SEEN target position (objective position is reversed with mirrored feedback) increased, especially around 300-400ms after stimulus onset. Additionally, differences in the ERPs around the same time after target onset were evident. Both effects were maximal around the parietal and parieto-occipital sites, suggesting modified stimulus processing.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1163.pdf}, department = {Department B{\"u}lthoff}, department2 = {Department G{\"o}tz}, web_url = {http://journalofvision.org/1/3/318/}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {Sarasota, FL, USA}, event_name = {First Annual Meeting of the Vision Sciences Society (VSS 2001)}, DOI = {10.1167/1.3.318}, author = {Berndt, I and Wascher, E and Franz, VH and G{\"o}tz, KG and B{\"u}lthoff, HH} } @Poster { 57, title = {Lateralisierung der hirnelektrischen Aktivit{\"a}t w{\"a}hrend Zielbewegungen mit gespiegeltem Blickfeld}, year = {2001}, month = {3}, pages = {147}, abstract = {Schaut man durch eine rechts-links spiegelnde Brille, so beobachtet man zwei Ph{\"a}nomene: Zeigt man z.B. mit dem rechten Arm, dann sieht es so aus, als f{\"u}hre der linke Arm diese Bewegung aus. Zudem scheint die Bewegung in die entgegengesetzte Richtung zu verlaufen. Befehl und R{\"u}ckmeldung stimmen also nicht mehr {\"u}berein, sind gegenl{\"a}ufig. Ein effizientes Verhalten mit gespiegeltem Feedback erfordert eine Umkodierung der visuomotorischen Koordination. Diese sollte sich in einer Ver{\"a}nderung der neuronalen Aktivit{\"a}t im EEG niederschlagen. Wir fanden in einer vorangegangenen Studie, dass sich die verschiedenen Anteile einer Zeigebewegung in Lateralisierungen hirnelektrischer Potentiale im EEG (event-related lateralizations = ERLs) abbilden: Auswahl des Effektors, Lokalisation des Zielreizes, Bewegungsrichtung und Kontrolle der r{\"a}umlich gerichteten Bewegung. Diese Lateralisierungen des EEG w{\"a}hrend der Zeigebewegung sollten sich auch durch die Spiegelung der visuellen R{\"u}ckmeldung spezifisch ver{\"a}ndern. Um dies zu untersuchen wurden EEG-Messungen w{\"a}hrend Zeigebewegungen mit und ohne Spiegelung des Gesichtsfeldes durchgef{\"u}hrt. Der Zielreiz wurde dabei entweder zentral oder lateralisiert (+/- 1,7 Grad) dargeboten. Es zeigte sich ein Effekt der Spiegelung auf die Lateralisierung des EEGs. Dieser bestand aus einer h{\"o}heren Aktivierung der zum gesehenen Zielreiz ipsilateralen Hemisph{\"a}re im Vergleich zur ungespiegelten Bedingung. (Zu beachten ist, dass sich die objektive Position bei Spiegelung umkehrt.) Dieser Effekt trat ca. 300-400 ms nach Stimulus Onset auf und war maximal in parietalen und parieto-occipitalen Regionen. Die Spiegelung verursachte eine r{\"a}umlich und zeitlich eingrenzbare Ver{\"a}nderung der Lateralisierung neuronaler Aktivit{\"a}t. Es liegt nahe, dass dies eine Modifikation der Zielreiz-Verarbeitung darstellt und durch die Umkodierung der visuomotorischen Koordination verursacht wird.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf57.pdf}, department = {Department B{\"u}lthoff}, department2 = {Department G{\"o}tz}, web_url = {http://www.twk.tuebingen.mpg.de/twk01/Psenso.htm}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {T{\"u}bingen, Germany}, event_name = {4. T{\"u}binger Wahrnehmungskonferenz (TWK 2001)}, author = {Berndt, I and Wascher, E and Franz, VH and G{\"o}tz, KG and B{\"u}lthoff, HH} } @Inbook { 330, title = {Biological sensors: Controlling the fly's gyroscopes.}, year = {1999}, pages = {18-19}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf330.pdf}, department = {Department G{\"o}tz}, publisher = {Macmillan Magazines Ltd.}, address = {Brunel Road, Basingstoke, Hampshire RG 21 2XS, UK}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Thesis { 462, title = {Histologische und verhaltensphysiologische Untersuchungen zur Funktion der Protocerebralbr{\"u}cke in normalen und erblich gest{\"o}rten Fliegen (Drosophila melanogaster).}, year = {1999}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, type = {PhD}, author = {Leng, S} } @Article { 235, title = {Biological sensors: Controlling the fly's gyroscopes.}, journal = {Nature}, year = {1998}, volume = {392}, pages = {757-758}, department = {Department G{\"o}tz}, web_url = {http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v392/n6678/full/392757a0_fs.html\&content_filetype=PDF}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Article { 241, title = {Dendritic structure and receptive-field organization of optic flow processing interneurons in the fly.}, journal = {Journal of Neurophysiology}, year = {1998}, volume = {79}, pages = {1902-1917}, abstract = {The third visual neuropil (lobula plate) of the blowfly Calliphora erythrocephala is a center for processing motion information. It contains, among others, 10 individually identifiable ''vertical system'' (VS) neurons responding to visual wide-field motions of arbitrary patterns. We demonstrate that each VS neuron is tuned to sense a particular aspect of optic flow that is generated during self-motion. Thus the VS neurons in the fly supply visual information for the control of head orientation, body posture, and flight steering. To reveal the functional organization of the receptive fields of the 10 VS neurons, we determined with a new method the distributions of local motion sensitivities and local preferred directions at 52 positions in the fly's visual field. Each neuron was identified by intracellular staining with Lucifer yellow and three-dimensional reconstructions from 10-µm serial sections. Thereby the receptive-field organization of each recorded neuron could be correlated with the location and extent of its dendritic arborization in the retinotopically organized neuropil of the lobula plate. The response fields of the VS neurons, i.e., the distributions of local preferred directions and local motion sensitivities, are not uniform but resemble rotatory optic flow fields that would be induced by the fly during rotations around various horizontal axes. Theoretical considerations and quantitative analyses of the data, which will be presented in a subsequent paper, show that VS neurons are highly specialized neural filters for optic flow processing and thus for the visual sensation of self-motions in the fly.}, department = {Department G{\"o}tz}, web_url = {http://jn.physiology.org/cgi/reprint/79/4/1902.pdf}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, B and Hengstenberg, R} } @Article { 147, title = {Metamorphosis of the mushroom bodies; large scale rearrangements of the neural substrates for associative learning and memory in Drosophila.}, journal = {Learning \& Memory}, year = {1998}, volume = {5}, pages = {102-114}, abstract = {Paired brain centers known as mushroom bodies are key features of the circuitry for insect associative learning, especially when evoked by olfactory cues. Mushroom bodies have an embryonic origin, and unlike most other brain structures they exhibit developmental continuity, being prominent components of both the larval and the adult CNS, Here, we use cell-type- specific markers, provided by the P\{GAL4\} enhancer trap system, to follow specific subsets of mushroom body intrinsic and extrinsic neurons from the larval to the adult stage. We find marked structural differences between the larval and adult mushroom bodies, arising as the consequence of large-scale reorganization during metamorphosis. Extensive, though incomplete, degradation of the larval structure is followed by establishment of adult specific alpha and beta lobes, Kenyon cells of embryonic origin, by contrast, were found to project selectively to the adult gamma lobe, We propose that the gamma lobe stores information of relevance to both developmental stages, whereas the alpha and beta lobes have uniquely adult roles.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Armstrong, JD and de Belle, JS and Wang, Z and Kaiser, K} } @Article { 258, title = {Persistence of orientation toward a temporarily invisible landmark in Drosophila melanogaster.}, journal = {Journal of Comparative Physiology A}, year = {1998}, volume = {182}, pages = {411-423}, abstract = {In arena experiments with the walking fruit fly, we found a remarkable persistence of orientation toward a landmark that disappeared during the fly's approach. The directional stability achieved by 'after-fixation' allows a fly to continue pursuit under natural conditions, where a selected target is frequently concealed by surrounding structures. The persistence of after-fixation was investigated in Buridan's paradigm, where a fly walks persistently back and forth between two inaccessible landmarks. Upon disappearance of a selected target, the flies maintained their intended course for more than 15 body lengths of approximately 2.5 mm in about 50\% of the trials. About 13\% even exceeded 75 body lengths. About 88\% of the approaches clustered in equal portions around peaks at 2.4 s and 8.6 s. About 12\% of the approaches persisted even longer. In contrast, a single peak at about 2.2 s is sufficient to describe the persistence of orientation in a random walk. The ability to pursue an invisible landmark is disturbed neither by a transient angular deviation from the course toward this landmark, when this target disappeared, nor by a distracting second landmark. Accordingly, after-fixation seems to require an internal representation of the direction toward the concealed target, and idiothetical course control to maintain this direction.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Strauss, R and Pichler, J} } @Article { 236, title = {Visual processing: How to know where to go.}, journal = {Nature}, year = {1998}, volume = {392}, pages = {231-232}, department = {Department G{\"o}tz}, web_url = {http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v392/n6673/full/392231a0_fs.html\&content_filetype=PDF}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Inproceedings { 1013, title = {The color-coding system of the photopic receptors R 7+8 in Drosophila supports object fixation.}, journal = {New Neuroethology on the Move. Proceedings of the 26th Goettingen Neurobiology Conference}, year = {1998}, volume = {26}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_name = {New Neuroethology on the Move. Proceedings of the 26th Goettingen Neurobiology Conference}, author = {Strauss, R and Renner, M and G{\"o}tz, KG} } @Inbook { 339, title = {Analysis of vision and gaze control in insects.}, year = {1998}, volume = {1}, pages = {20-22}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf339.pdf}, department = {Department G{\"o}tz}, editor = {C. Taddei-Ferretti}, publisher = {World Scientific Publishing}, address = {5 Tuh Tuck Link, 596224 Singapore}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Inbook { 345, title = {Automatische Diagnose genetisch bedingter Laufanomalien der Fliege Drosophila bei freier Bewegung in realer oder virtueller Umgebung.}, year = {1998}, volume = {51}, pages = {53-78}, department = {Department G{\"o}tz}, editor = {T. Plesser, P. Wittenburg}, publisher = {Gesellschaft f{\"u}r wissenschaftliche Datenverarbeitung (GWDG)}, address = {Am Fassberg, Turm 6, 37077 G{\"o}ttingen}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Strauss, R} } @Inbook { 1171, title = {Processing of visual information in the fruitfly Drosophila. I. Sensory maps for the control of course and altitude.}, year = {1998}, volume = {5}, pages = {431-446}, department = {Department G{\"o}tz}, editor = {C. Taddei-Ferretti \& C.Musio}, publisher = {World Scientific Publishing}, address = {5 Tuh Tuck Link, 596224 Singapore}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Inbook { 338, title = {Processing of visual information in the fruitfly Drosophila. II. Adaptation and experience improve the efficiency of search.}, year = {1998}, volume = {5}, pages = {447-456}, department = {Department G{\"o}tz}, editor = {C. Taddei-Ferretti \&, C.Musio}, publisher = {World Scientific Publishing, Singapore 1998}, address = {5 Toh Tuck Link, 596224 Singapore}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Inbook { 340, title = {The organization of gaze control in the blowfly Calliphora.}, year = {1998}, volume = {2}, pages = {41-52}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf340.pdf}, department = {Department G{\"o}tz}, editor = {C. Taddei-Ferretti}, publisher = {World Scientific Publishing}, address = {5 Tuh Tuck Link, 596224 Singapore}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Inbook { 342, title = {Visual sensation of self-motion in the blowfly Calliphora.}, year = {1998}, volume = {2}, pages = {53-70}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf342.pdf}, department = {Department G{\"o}tz}, editor = {C.Taddei-Ferretti}, publisher = {World Scientific Publishers}, address = {5 Tuh Tuck Link, 596224 Singapore}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R and Krapp, HG and Hengstenberg, B} } @Poster { 281, title = {Ethograms of three Drosophila mutant strains with structural defects in the protocerebral bridge}, year = {1998}, month = {5}, volume = {26}, pages = {259}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {26th G{\"o}ttingen Neurobiology Conference}, author = {Leng, S and Strauss, R} } @Poster { 335, title = {How flies perform turns - high resolution statistical analyses in normal and brain-defectiveDrosophila melanogaster}, year = {1998}, month = {5}, volume = {26}, pages = {258}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {26th G{\"o}ttingen Neurobiology Conference}, author = {Wannek, U and Strauss, R} } @Poster { 1195, title = {The color-coding system of the photopic receptors R 7+8 in Drosophila supports object fixation}, year = {1998}, month = {5}, volume = {26}, pages = {421}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {26th G{\"o}ttingen Neurobiology Conference}, author = {Strauss, R and Renner, M and G{\"o}tz, KG} } @Poster { 276, title = {VS-neurons as matched filters for self-motion-induced optic flow fields}, year = {1998}, month = {5}, volume = {26}, pages = {419}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf276.pdf}, url2 = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/ps276.ps}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {26th G{\"o}ttingen Neurobiology Conference}, author = {Franz, MO and Hengstenberg, R and Krapp, HG} } @Article { 367, title = {A fast stimulus procedure to determine local receptive field properties of motion-sensitive visual interneurons.}, journal = {Vision Research}, year = {1997}, volume = {37}, pages = {225-234}, abstract = {We present a method to determine, within a few seconds, the local preferred direction (LPD) and local motion sensitivity (LMS) in small patches of the receptive fields of wide-held motion-sensitive neurons. This allows us to map, even during intracellular recordings, the distribution of LPD and LMS over the huge receptive fields of neurons sensing self-motions of the animal. Comparisons of the response field of a given neuron with the optic flow fields caused by different movements in space, allows us to specify the particular motion of the animal sensed by that neuron. Copyright (C) 1996 Elsevier Science Ltd.}, department = {Department G{\"o}tz}, web_url = {http://www.sciencedirect.com/science?_ob=MImg\&_imagekey=B6T0W-3RBJ1C3-6-K\&_cdi=4873\&_orig=browse\&_coverDate=11\%2F29\%2F1996\&_sk=999629997\&view=c\&wchp=dGLbVtb-lSztz\&_acct=C000003178\&_version=1\&_userid=29041\&md5=5cddbec0e0451cbeeb7cd54eae7be3e6\&ie=f.pdf}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R} } @Article { 362, title = {Association of visual objects and olfactory cues in Drosophila.}, journal = {Learning \& Memory}, year = {1997}, volume = {4}, pages = {192-204}, abstract = {Context-dependent preferences in a choice between an upper and a lower visual object of otherwise identical appearance were recorded during stationary flight of the fruitfly, Drosophila melanogaster, in a flight simulator. The test animal was held in a fixed orientation at the center of a wing-beat processor that converts attempted turns into counter-rotations of a surrounding cylindrical panorama. This allowed the ny to maneuver the preferred object into the actual direction of flight. Single flies were trained to avoid a course toward the visual object that had been associated with the aversive odor benzaldehyde (BAL). Conditioned object avoidance was investigated in different treatment groups by collective evaluation of the scores from 80 long-lasting flights (>1 hr). In addition to a significant cross-modal association, we found a striking long-term effect of transient exposure to BAL both in the embryonic and larval states. The preimaginal experience significantly increased the indifference to BAI, in the adult flies. Disturbed vision does not account for this effect: Neither the perception nor the discrimination of the visual objects was significantly impaired in the investigated flies. Disturbed olfaction could explain the present results. Recently, however, preimaginal BAL uptake has been found to interfere directly with the retention of heat-shock-conditioned object avoidance.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Guo, A and G{\"o}tz, KG} } @Article { 382, title = {Larval behavior of Drosophila central complex mutants:internations between no bridge, foraging and chaser.}, journal = {Journal of Neurogenetics}, year = {1997}, volume = {11}, pages = {99-115}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Varnam, C and Strauss, R and de Belle, JS and Sokolowski, M} } @Article { 381, title = {Processing of artificial visual feedback in the walking fruit fly Drosophila melanogaster.}, journal = {Journal of Experimental Biology}, year = {1997}, volume = {200}, pages = {1281-1296}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Strauss, R and Schuster, S and G{\"o}tz, KG} } @Inproceedings { 1304, title = {In memoriam Werner Reichardt 1924-1992}, year = {1997}, pages = {15-19}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1304.pdf}, department = {Department G{\"o}tz}, editor = {Taddei Ferretti, C.}, publisher = {World Scientific}, address = {Singapore}, booktitle = {Biophysics of photoreception: Molecular and phototransductive events}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_name = {International School of Biophysics 1994}, ISBN = {9-810-23228-4}, author = {Hengstenberg, R} } @Poster { 410, title = {Impaired step lengths common to three unrelated Drosophila mutant lines with common brain defects confirm the involvement of the protocerebral bridge in optimizing walking speed}, journal = {From Membrane to Mind}, year = {1997}, month = {5}, pages = {294}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {25th G{\"o}ttingen Neurobiology Conference}, author = {Leng, S and Strauss, R} } @Poster { 1194, title = {Optomotor force control within the wingbeat cycle of Drosophila}, journal = {From Membrane to Mind}, year = {1997}, month = {5}, pages = {295}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {25th G{\"o}ttingen Neurobiology Conference}, author = {Renner, M and G{\"o}tz, KG} } @Poster { 426, title = {Right-left bargaining in the central complex: lessons from unilaterally defective Drosophila mosaic mutants}, journal = {From Membrane to Mind}, year = {1997}, month = {5}, pages = {293}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {25th G{\"o}ttingen Neurobiology Conference}, author = {Strauss, R and Trinath, T and Leng, S} } @Poster { 436, title = {Turning strategies of the walking fly, Drosophila melanogaster, and impairments thereof in the brain defective mutant no bridge}, journal = {From Membrane to Mind}, year = {1997}, month = {5}, pages = {292}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {25th G{\"o}ttingen Neurobiology Conference}, author = {Wannek, U and Strauss, R} } @Poster { 422, title = {Walking speed of fruitflies under conditions of artificial visual feedback}, journal = {From Membrane to Mind}, year = {1997}, month = {5}, pages = {291}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {25th G{\"o}ttingen Neurobiology Conference}, author = {Schuster, S} } @Article { 539, title = {Tri-axial, real-time logging of fly head movements}, journal = {Journal of Neuroscience Methods}, year = {1996}, month = {2}, volume = {64}, number = {2}, pages = {209-218}, abstract = {We present a method to record and simultaneously display the three rotatory components of arbitrary head turns of an insect flying stationarily in a wind tunnel or walking on a treadmill. An elongated marker, placed on the fly's forehead, is video- recorded from ahead under deep red stroboscopic illumination, invisible to the insect. A fast on-board image processor of a PC video-adapter (True Vision, AT-Vista), programmed in its native code, extracts position and orientation of the marker in the video-image. The host PC transforms these data into calibrated head angles and displays stimulus and response components after 40 ms processing time at a rate of 50 frames per second. Head turns are measured relative to the fly's trunk even when the fly is rotated around its body axis provided that it is aligned with the video-axis. Technical tests, as well as recordings from live flies responding to various stimuli, illustrate the performance and accuracy of the procedure. This minimally invasive method of motion recording should be easily adaptable to other insects and to similar movements of small parts.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf539.pdf}, department = {Department G{\"o}tz}, web_url = {10.1016/0165-0270(95)00136-0}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, DOI = {http://www.sciencedirect.com/science/article/pii/0165027095001360}, author = {Stange, G and Hengstenberg, R} } @Article { 526, title = {Activation phase ensures kinematic efficacy in flight-steering muscles of Drosophila melanogaster.}, journal = {Journal of Comparative Physiology A-Sensory Neural And Behavioral Physiology}, year = {1996}, volume = {179}, pages = {311-322}, abstract = {During tethered flight in Drosophila melanogaster, spike activity of the second basalar flight-control muscle (M.b2) is correlated with an increase in both the ipsilateral wing beat amplitude and the ipsilateral flight force. The frequency of muscle spikes within a burst is about 100 Hz, or 1 spike for every two wing beat cycles. When M.b2 is active, its spikes tend to occur within a comparatively narrow phase band of the wing beat cycle. To understand the functional role of this phase-lock of firing in the control of flight forces, we stimulated M.b2 in selected phases of the wing beat cycle and recorded the effect on the ipsilateral wing beat amplitude. Varying the phase timing of the stimulus had a significant effect on the wing beat amplitude. A maximum increase of wing beat amplitude was obtained by stimulating M.b2 at the beginning of the upstroke or about 1 ms prior to the narrow phase band in which the muscle spikes typically occur during flight. Assuming a delay of 1 ms between the stimulation of the motor nerve and muscle activation, these results indicate that M.b2 is activated at an instant of the stroke cycle that produces the greatest effect on wing beat amplitude.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Lehmann, F-O and G{\"o}tz, KG} } @Article { 525, title = {Estimation of self-motion by optic flow processing in single visual interneurons.}, journal = {Nature}, year = {1996}, volume = {384}, pages = {463-466}, abstract = {Humans, animals and some mobile robots use visual motion cues for object detection and navigation in structured surroundings (1-4). Motion is commonly sensed by large arrays of small field movement detectors, each preferring motion in a particular direction (5, 6). Self-motion generates distinct 'optic flow fields' in the eyes that depend on the type and direction of the momentary locomotion (rotation, translation) (7). To investigate how the optic flow is processed at the neuronal level, we recorded intracellularly from identified interneurons in the third visual neuropile of the blowfly (8). The distribution of local motion tuning over their huge receptive fields was mapped in detail. The global structure of the resulting 'motion response fields' is remarkably similar to optic flow fields. Thus, the organization of the receptive fields of the so-called VS neurons (9,10) strongly suggests that each of these neurons specifically extracts the rotatory component of the optic flow around a particular horizontal axis. Other neurons are probably adapted to extract translatory flow components. This study shows how complex visual discrimination can be achieved by task-oriented preprocessing in single neurons.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf525.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R} } @Article { 446, title = {Expression of Drosophila mushroom body mutations in alternative genetic backgrounds:A case study of the mushroom body miniature gene (mbm).}, journal = {Proceedings of the National Academy of Sciences of the United States of America}, year = {1996}, volume = {93}, pages = {9875-9880}, abstract = {Mutations in 12 genes regulating Drosophila melanogaster mushroom body (MB) development were each studied in two genetic backgrounds. In all cases, brain structure was qualitatively or quantitatively different after replacement of the ''original'' genetic background with that of the Canton Special wild-type strain. The mushroom body miniature gene (mbm) was investigated in detail. mbm supports the maintenance of MB Kenyon cell fibers in third instar larvae and their regrowth during metamorphosis. Adult mbm(1) mutant females are lacking many or most Kenyon cell fibers and are impaired in MB-mediated associative odor learning. We show here that structural defects in mbm(1) are apparent only in combination with an X-linked, dosage-dependent modifier (or modifiers). In the Canton Special genetic background, the mbm(1) anatomical phenotype is suppressed, and MBs develop to a normal size. However, the olfactory learning phenotype is not fully restored, suggesting that submicroscopic defects persist in the MBs. Mutant mbm(1) flies with full-sized MBs have normal retention but show a specific acquisition deficit that cannot be attributed to reductions in odor avoidance, shock reactivity, or locomotor behavior. We propose that polymorphic gene interactions (in addition to ontogenetic factors) determine MB size and, concomitantly, the ability to recognize and learn odors.}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {de Belle, JS and Heisenberg, M} } @Article { 543, title = {Larval behavior of Drosophila central complex mutants: Interactions between no bridge, foraging, and chaser.}, journal = {Journal of Neurogenetics}, year = {1996}, volume = {11}, pages = {99-115}, abstract = {The central complex (CC) is a prominent component of the adult insect brain. In Drosophila melanogaster, mutations which alter CC structure also impair adult locomotion. This has led to the suggestion that the CC functions as a higher organizer of adult locomotor patterns (Strauss and Heisenberg, 1993). In the present study, we describe altered larval behavior resulting from mutations in six CC structural genes. Differences from the control strain were found for larvae from each CC mutant strain in at least one of three assays. central body defect(1) (cbd(1)), central complex deranged(1) (ccd(1)), central brain deranged(1) (ceb(1)) and central complex(1) (cex(1)) larvae all had general defects in locomotion (on a non-nutritive agar surface). Both ellipsoid body open(2) (ebo(2)) and no bridge(1) (nob(1)) had larval foraging behavior defects (on a nutritive yeast surface). Only cex(1) larvae required significantly longer time in a roil over assay of muscle tone. Genetic analysis suggested that nob(1) interacts additively with two other genes influencing larval foraging behavior, foraging (for) and Chaser (Car). Sor also had an influence on adult foraging, whereas here we found that Csr did not. We did not include adult foraging behavior tests of the CC mutants due to general locomotion defects in these flies (Strauss and Heisenberg, 1993).}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Varnam, CJ and Strauss, R and de Belle, JS and Sokolowski, MB} } @Article { 517, title = {Optomotor control of course and altitude in Drosophila melanogaster is correlated with distinct activities of atleast three pairs of flight steering muscles.}, journal = {Journal Of Experimental Biology}, year = {1996}, volume = {199}, pages = {1711-1726}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Heide, G and G{\"o}tz, KG} } @Article { 447, title = {The wake dynamics and flight forces of the fruit fly Drosophila melanogaster.}, journal = {Journal of Experimental Biology}, year = {1996}, volume = {199}, pages = {2085-2104}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Dickinson, MH and G{\"o}tz, KG} } @Poster { 1193, title = {Internal representation of targets during visual search in the fly Drosophila?}, journal = {Brain and Evolution}, year = {1996}, month = {5}, volume = {2}, pages = {353}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {24th G{\"o}ttingen Neurobiology Conference}, author = {Schuster, S and G{\"o}tz, KG} } @Poster { 598, title = {A fast method of examining turning behavior in Drosophila.}, journal = {In: Brain and Evolution, Vol. II,(Eds.) N. Elsner and H.-U. Schnitzler. Thieme, Stuttgart}, year = {1996}, pages = {133}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Wannek, U and Strauss, R} } @Poster { 580, title = {A new walking impaired Drosophila mutant has a structural defect in the protocerebral bridge of the central complex.}, journal = {Brain and Evolution, Vol. II, (Eds.) N. Elsner, H.-U. Schnitzler. Thieme, Stuttgart}, year = {1996}, pages = {134}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Leng, S and Strauss, R} } @Poster { 574, title = {Distribution of roll motion sensitivity in the eyes of Calliphora: a comparison between neurons and behaviour.}, journal = {Brain and Evolution, Vol. II, (Eds.) N. Elsner, H.U. Schnitzler. Thieme, Stuttgart 1996}, year = {1996}, pages = {349}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf574.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R and Krapp, HG} } @Poster { 599, title = {Do mushroom bodies mediate circadian locomotor activity rhythms in Drosophila?}, journal = {In: Brain and Evolution, Vol. I, (Eds.) N. Elsner and H.-U. Schnitzler. Thieme, Stuttgart}, year = {1996}, pages = {29}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Wulf, J and de Belle, JS and Helfrich-F{\"o}rster, C} } @Poster { 567, title = {Genetic, neuroanatomical and behavioral analyses of the mushroom-body-miniature gene in Drosophila melanogaster.}, journal = {J. Neurogenet.}, year = {1996}, volume = {10}, pages = {24}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {de Belle, JS and Heisenberg, M} } @Poster { 591, title = {Internal representation of targets during visual search in the fly Drosophila?}, journal = {Brain and Evolution, Vol. II, (Eds.) N. Elsner, H.U. Schnitzler. Thieme, Stuttgart}, year = {1996}, pages = {353}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Schuster, S and G{\"o}tz, KG} } @Poster { 592, title = {Is walking in a straight line controlled by the central complex? Evidence from a new Drosophila mutant.}, journal = {In: Brain and Evolution, Vol. II, (Eds.) N. Elsner and H.-U. Schnitzler. Thieme, Stuttgart}, year = {1996}, pages = {135}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Strauss, R and Trinath, T} } @Thesis { 613, title = {Repr{\"a}sentation visueller Objekte beim Suchlauf der Fliege Drosophila. T{\"u}bingen}, year = {1996}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, type = {PhD}, author = {Schuster, S} } @Article { 1181, title = {Processing of visual input in the fruitfly Drosophila. I. Conversion of the retinal image into a stack of sensory maps; hereditary defects.}, journal = {International Centre for Theoretical Physics}, year = {1995}, month = {6}, day = {9}, pages = {Triest-Triest}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Article { 1182, title = {Processing of visual input in the fruitfly Drosophila. II. Flight control by evaluation of the movements of figure and ground.}, journal = {International Centre for Theoretical Physics}, year = {1995}, month = {6}, day = {9}, pages = {Triest-Triest}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Article { 1183, title = {Processing of visual input in the fruitfly Drosophila. III. Functional flexibility; search and choice.}, journal = {International Centre for Theoretical Physics}, year = {1995}, month = {6}, day = {9}, pages = {Triest-Triest}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Article { 621, title = {Drosophila mushroom body subdomains - innate or learned representations of odor preference and sexual orientation.}, journal = {Neuron}, year = {1995}, volume = {15}, pages = {245-247}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {de Belle, JS} } @Poster { 1303, title = {Filter neurons for specific optic flow patterns in the fly's visual systems}, year = {1995}, month = {9}, volume = {4}, pages = {255}, abstract = {The control of locomotion in a given environment requires information about instantaneous self-motion. Visually oriented animals, including man, may gain such information by analyzing the momentary optic flow pattern generated over both eyes during relative movement between animal and environment. Optic flow patterns can be described by vector fields where each single vector indicates the direction and velocity of the local relative movement at a certain position within the visual field. An optic flow pattern depends upon a set of motion parameters, namely (i) the direction of gaze and (ii) the rotatory and (iii) translatory components of self-motion. The translatory flow vectors also depend an the distance between visual objects and the eyes. Therefore, optic flow fields contain valuable information about the 3D-layout of the surroundings and instantaneous self-motion (Koenderink and van Doorn, 1987). About 50 motion-sensitive, wide-field interneurons which are assumed to be' involved in locomotor control are located in the third visual neuropil (lobula plate) of the blowfly's (Calliphora erythrocephala) visual system (Hausen, 1993). The output of many direction-specific movement detectors (EMDS) with small receptive fields are spatially integrated in a retinotopic manner an the dendrites of these interneurons. Are such interneurons adapted to sense specific aspects of the momentary optic flow field? To address this question, we investigated the receptive field organization of 10 identifiable interneurons of the so called vertical-system (VS; Hengstenberg, 1982) in great detail. We recorded intracellularly from the VS-neurons to determine the spatial distribution of local preferred directions and motion sensitivities at 52 positions spaced equally over the ipsilateral visual hemisphere (for method see: Menzel and Hengstenberg, 1991; Krapp and Hengstenberg 1992). The resulting response fields of the VS-neurons (about 90 recordings) show striking similarities to optic flow fields generated by specific motions in space (Krapp and Hengstenberg, 1994). By applying an iterative least square formalism (Koenderink and van Doorn, 1987) to the response fields we calculated the optimal self-motion parameters (translatory and rotatory component) for each VS-neuron. These parameters describe an optic flow field that best fits the respective measured response field. To find out whether the VS-neurons are functionally tuned more to the translatory or to the rotatory component of self-motion we systematically varied the optimal motion parameters. The error between the measured response field and the calculated optic flow field increases if both the translatory and the rotatory component deviate from the optimal motion parameters. The increase in the error is almost the same if only the rotatory component is varied. In contrast, if the translatory component is varied and the rotatory component is kept optimal the increase in the error is considerably smaller. The analysis of the response fields of the VS-neurons leads to the following conclusion: the VS-neurons are functionally tuned to sense rotations around different horizontally aligned body axes. The neurons VS1-VS3 are optimized to sense optic flow fields generated during nose-up pitch. VS4-VS7 are filter neurons for counterclockwise roll and VS8-VS10 are adapted to rotations around an axis that lies between the pitch and roll axes. Thus, the signals of the VS-neurons could contribute directly to visual flight control and gaze stabilization.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1303.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {Cambridge, UK}, event_name = {4th International Congress of Neuroethology}, author = {Krapp, HG and Hengstenberg, R} } @Poster { 1192, title = {Distance-dependent response to competing visual stimuli discloses an interactive component of visual perception in Drosophila}, year = {1995}, month = {3}, volume = {23}, pages = {403}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {23rd G{\"o}ttingen Neurobiology Conference}, author = {Schuster, S and G{\"o}tz, KG and Strauss, R} } @Poster { 1301, title = {Comparison between optic fields and response fields of visual interneurons in the lobula plate of the blowfly Calliphora.(In:Learning and Memory, ed.by Elsner,N. and Menzel, R.)}, year = {1995}, pages = {404}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1301.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R} } @Poster { 1302, title = {Gain differences of gaze stabilizing head movements, elicited by wide-field pattern motions, demonstrate in wildtype and mutant Drosophila, the importance of HS-and VS-Neurons in the third visual neuropile, for the control of turning behaviour.(In: Nervou}, year = {1995}, pages = {255}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1302.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Article { 1299, title = {The halteres of the blowfly Calliphora. II. Three-dimensional organization of compensatory reactions to real and simulated rotations.}, journal = {J. Comp. Physiol. A}, year = {1994}, volume = {175}, pages = {695-708}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1299.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Nalbach, G and Hengstenberg, R} } @Inbook { 1300, title = {Aktueller Forschungsschwerpunkt der Arbeitsgruppe G{\"o}tz: Regelung der Kopfstellung und der K{\"o}rperhaltung einer Fliege bei der Bewegung im Raum}, year = {1994}, pages = {199-207}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1300.pdf}, department = {Department G{\"o}tz}, editor = {Deutschmann, S.}, publisher = {Vandenhoek \& Ruprecht}, address = {G{\"o}ttingen, Germany}, booktitle = {Jahruch der Max-Planck-Gesellschaft 1994}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Inbook { 1170, title = {Exploratory strategies in Drosophila.}, year = {1994}, pages = {47-59}, department = {Department G{\"o}tz}, publisher = {edited by Schildberger, K. \& Elsner, N. Progress in Zoology 39. G. Fischer, Stuttgart}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Poster { 1191, title = {Adaptation of area covering random walk in Drosophila}, year = {1994}, month = {5}, volume = {22}, pages = {304}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {22nd G{\"o}ttingen Neurobiology Conference}, author = {Schuster, S and G{\"o}tz, KG} } @Poster { 515, title = {Correspondence of dendritic field structure, receptive field organization and specific optic flow patterns in visual interneurons of the blowfly Calliphora.(In:Sensory Transduction, Vol 2, ed. by Elsner,N.,Breer,H.)}, year = {1994}, pages = {453}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf515.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, B and Hengstenberg, R} } @Article { 1298, title = {Optical properties of the ocelli of Calliphora erythrocephala and their role in the dorsal light response.}, journal = {J. Comp. Physiol. A}, year = {1993}, volume = {173}, pages = {143-149}, abstract = {The 3 Ocelli of the blowfly Calliphora erythrocephala, grouped close together on the top of the head (Fig.1), have large, extensively overlapping visual fields. Together they view the entire upper hemisphere of the surroundings plus part of the lower hemisphere (Fig. 5, 7). It is shown for the lateral ocelli that despite the underfocussing of the ocellar lens large patterns are imaged on the receptor mosaic. Because of the astigmatism of the lens, patterns in longitudinal orientations are more accurately represented than in others (Fig. 3). Nevertheless, an artifical horizon rotated around the long axis of the animal does not elicit head roll. Likewise, changes of overall brightness in the visual field of the median and one lateral ocellus elicit only weak phasic-tonic ''dorsal light responses'' of the animal which supplement the tonic dorsal light responses mediated by the compound eyes (Figs. 9, 10). Our results show that, in Calliphora, the ocelli have little influence on head orientation during flight, and must be assumed to serve other functions.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1298.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Schuppe, H and Hengstenberg, R} } @Article { 563, title = {The active control of wing rotation by Drosophila.}, journal = {J.exp.Biol.}, year = {1993}, volume = {182}, pages = {173-189}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Dickinson, MH and G{\"o}tz, KG} } @Article { 562, title = {Unsteady aerodynamic performance of model wings at low Reynolds numbers.}, journal = {J.exp.Biol.}, year = {1993}, volume = {174}, pages = {45-64}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Dickinson, MH and G{\"o}tz, KG} } @Inbook { 1296, title = {Multisensensory control in insect oculomotor systems (In:Visual Motion and its Role in the Stabilization of Gaze, ed. by Miles,F.A. and Wallman,J.)}, year = {1993}, pages = {285-298}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1296.pdf}, department = {Department G{\"o}tz}, publisher = {Elsevier Science Publ., Amsterdam}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Inbook { 1167, title = {Nachruf auf Werner Reichardt}, year = {1993}, pages = {110-114}, department = {Department G{\"o}tz}, editor = {Akademie der Wissenschaften und der Literatur}, publisher = {Steiner}, address = {Stuttgart, Germany}, booktitle = {Jahrbuch 1992 der Akademie der Wissenschaften und der Literatur}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Inbook { 1169, title = {Vision in Drosophila.}, year = {1993}, volume = {IX}, pages = {1-14}, department = {Department G{\"o}tz}, publisher = {edited by Wang, B.Y. \& Cai, N.S. The School of Life Sciences, Fudan University, Shanghai}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Poster { 1297, title = {Representation of specific optical flow fields in lobula plate neurons of the blowfly Calliphora.(In:Gene, Brain, Behavior, ed. by Elsner,N.and Heisenberg,M.)}, year = {1993}, pages = {357}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1297.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R} } @Miscellaneous { 1168, title = {Nachruf auf Werner Reichardt}, journal = {Berichte und Mitteilungen der Max-Planck-Gesellschaft zur F{\"o}rderung der Wissenschaften}, year = {1993}, volume = {1993}, pages = {123-127}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Article { 1295, title = {Structure and kinematics of the prosternal organs and their influence on head position in the blowfly Calliphora erythrocephala Meig.}, journal = {J. Comp. Physiol. A}, year = {1992}, volume = {171}, pages = {483-493}, abstract = {The blowfly Calliphora has a mobile head and various, presumably proprioceptive, sense organs in the neck region. The ''prosternal organs'' are a pair of mechanosensory hair fields, each comprising ca. 110 sensilla. We studied their structure (Figs. 2-4), kinematics (Figs.5, 6) and,  after surgery, their influence on head posture (Figs. 7-11) in order to reveal their specific function. The hair sensilla are stucturally polarized, all in roughly the same direction, and are stimulated by dorsoventral bending of the hairs (Figs. 3, 4). This occurs indirectly by flap- movements of two contact sclerites (Figs. 3, 6); they move in the same direction during pitch turns of the head, in opposite directions during roll turns, and barely at all during yaw turns of the head (Fig. 5). Bending and arresting all hairs of one field elicits a head roll bias to the non-operated side (Fig. 7) during tethered flight in visually featureless surroundings. In contrast, shaving all hairs of one field elicits a head roll to the operated side (Figs. 8-10). The surgically induced bias of head posture is not compensated within  three days (Fig. 10). Our results show that the prosternal organs of Calliphora sense pitch and roll turns of the fly's head, and control at least its roll position.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1295.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Preuss, T and Hengstenberg, R} } @Inbook { 1291, title = {Stabilizing head/eye movements in the blowfly Calliphora erythrocephala.(In:The Head/Neck-System; ed.by Berthoz,A.,Graf,W.and Vidal,P.P.)}, year = {1992}, pages = {49-55}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1291.pdf}, department = {Department G{\"o}tz}, publisher = {Oxford Univ. Press, NY}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Poster { 1190, title = {Wing interaction and flight control in Drosophila}, year = {1992}, month = {6}, volume = {20}, pages = {173}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {20th G{\"o}ttingen Neurobiology Conference}, author = {Lehmann, F-O and G{\"o}tz, KG} } @Poster { 1293, title = {Control of head pitch in Drosophila during rest and flight (In: Rhythmogenesis in Neurons and Networks, ed.by Elsner,N.and Richter,D.W.)}, year = {1992}, pages = {305}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1293.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Poster { 1294, title = {Reliability of a fast method to determine locally the preferred direction of motion sensitive neurons.(In:Rhythmogenesis in Neurons and Networks, ed. by Elsner,N. and Richter,D.W)}, year = {1992}, pages = {306}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1294.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Krapp, HG and Hengstenberg, R} } @Article { 561, title = {Bewertung und Auswahl visueller Zielobjekte bei der Fliege Drosophila.}, journal = {Zool.Jb.Physiol.}, year = {1991}, volume = {95}, pages = {279-286}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Article { 1287, title = {Gaze control in the blowfly Calliphora: A multisensory two-stage integration process.}, journal = {The Neuroscience}, year = {1991}, volume = {3}, pages = {19-29}, abstract = {Flies move their eyes by turning their heads either spontaneously or in response to unexpected disturbances of their preferred flight attitude. They use several visual and mechanosensory cues to keep flight balance and to stabilize their eyes relative to the surroundings by compensatory head/eye movements. The various sensory subsystems have different speed characteristics and cooperate autonomously to provide the fly with fast and accurate visual stabilization. Head and trunk are coordinated by neck sense organs affecting head posture as well as flight torque. The functional structure of the fly's gaze control system changes its input-and output configuration when the fly alternates between flight and walking}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1287.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Article { 1288, title = {Stabilisierende Kopfbewegungen bei der Schmei{\ss}fliege Calliphora erythrocephala}, journal = {Zoologische Jahrb{\"u}cher: Abteilung f{\"u}r allgemeine Zoologie und Physiologie der Tiere}, year = {1991}, volume = {95}, pages = {297-304}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1288.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Poster { 1285, title = {A fast mehod to determine the distribution of local preferred directions within the receptive field of motion sensitive neurons (In: Synapse, Transmission, Modulation, ed. by Elsner,N.and Prenzlin, H.)}, year = {1991}, pages = {274}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1285.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Menzel, J and Hengstenberg, R} } @Poster { 1286, title = {Head posture, body posture and gaze movements in the resting and flying fruitfly Drosophila.(In:Synapse, Transmission, Modulation, ed. by Elsner,N.and Prenzlin, H.)}, year = {1991}, pages = {273}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1286.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Poster { 1290, title = {K{\"o}rperhaltung, Kopfstellung und Blickbewegungen bei der Fruchtfliege Drosophila.}, journal = {Verhdlg. d. Deutsch. Zool. Ges.}, year = {1991}, volume = {84}, pages = {344-345}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1290.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Poster { 1289, title = {Spontaneous and stabilizing head movements in wildtype and optomotor blind Drosophila.(In:12th EDRC Abstract Book, ed. by Gateff, E. European Drosophila Research Conference, Mainz)}, year = {1991}, pages = {100}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1289.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Article { 560, title = {The wing beat of Drosophila melanogaster II. Dynamics.}, journal = {Phil.Trans.R.Soc.Lond.B}, year = {1990}, volume = {327}, pages = {19-44}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Zanker, JM and G{\"o}tz, KG} } @Inproceedings { 1189, title = {Electrical stimulation of a flight control muscle in Drosophila}, year = {1990}, month = {6}, pages = {77}, department = {Department G{\"o}tz}, editor = {Elsner, N. , G. Roth}, publisher = {Thieme}, address = {Stuttgart, Germany}, booktitle = {Brain - Perception - Cognition}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {18th G{\"o}ttingen Neurobiology Conference}, ISBN = {3-13-754301-0}, author = {Lehmann, F-O and G{\"o}tz, KG} } @Inproceedings { 1284, title = {The influence of neck sense organs on head position in the blowlfly Calliphora erythrocephala M.}, year = {1990}, month = {6}, pages = {78}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1284.pdf}, department = {Department G{\"o}tz}, editor = {Elsner, N. , G. Roth}, publisher = {Thieme}, address = {Stuttgart, Germany}, booktitle = {Brain - Perception - Cognition}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {G{\"o}ttingen, Germany}, event_name = {18th G{\"o}ttingen Neurobiology Conference}, ISBN = {3-13-754301-0}, author = {Preuss, T and Hengstenberg, R} } @Inbook { 1165, title = {Exploration der Umwelt: Suchstrategien einer Taufliege.}, year = {1989}, pages = {27-38}, department = {Department G{\"o}tz}, publisher = {edited by Nachtigall, W. Biona report 8. G. Fischer, Stuttgar7}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Inbook { 1166, title = {Search and choice in Drosophila.}, year = {1989}, pages = {139-153}, department = {Department G{\"o}tz}, publisher = {edited by Singh, R.N. \& Strausfeld, N.J. Plenum Press, New York}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {G{\"o}tz, KG} } @Poster { 763, title = {Integrating information for visual recognition of three-dimensional (3-D) objects}, journal = {Perception}, year = {1989}, month = {9}, volume = {18}, number = {4}, pages = {517}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {Zichron Yaakov, Israel}, event_name = {Twelfth European Conference on Visual Perception (ECVP 1989)}, author = {Edelman, S and B{\"u}lthoff, HH and Weinshall, D} } @Poster { 764, title = {Interactions between transparency and depth}, journal = {Perception}, year = {1989}, month = {9}, volume = {18}, number = {4}, pages = {504}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, event_place = {Zichron Yaakov, Israel}, event_name = {Twelfth European Conference on Visual Perception (ECVP 1989)}, author = {B{\"u}lthoff, HH and Kersten, D} } @Poster { 1283, title = {Multisensory control of head/eye movements in an insect.(In: Neural Mechanisms of Behavior; ed. by Erber,J.,Menzel,R.,Pfl{\"u}ger,H.J.,Todt,D.)}, year = {1989}, pages = {257-258}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/pdf1283.pdf}, department = {Department G{\"o}tz}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, author = {Hengstenberg, R} } @Article { 559, title = {Cortical templates for the self-organization of orientation-specific d- and l-hypercolumns in monkeys and cats}, journal = {Biological Cybernetics}, year = {1988}, month = {3}, volume = {58}, number = {4}, pages = {213-223}, abstract = {Blasdel and Salama's sensory maps of orientation-selective edge detectors in the monkey striate cortex can be reduced to an idealized scheme in which orientation hypercolumns of the d- and l-type occur in alternating sequence (Fig. 1). This scheme resolves the apparent contradiction between linear and circular arrangements of successive edge directions in earlier accounts. The actual configuration of hypercolumns is in register with two possible templates for the self-organization of orientation selectivity: the isometric cytochrome oxidase blobs of the colour system, and the anisometric slabs of the ocular dominance system. The centers of the hypercolumns coincide with the blobs. Simulation of cortical self-organization shows this co-incidence even in the absence of template-specific interactions. However, blobs and slabs are symmetrical to these centers, and therefore no templates for the asymmetrical distribution of preferred orientation in the hypercolumns. The present simulation derives the pre-natal formation of an initial scheme from a hypothetical gradient of nervous activity. Post-natal formation, or maturation, of this scheme is achieved by visual experience. Simulation of corresponding interactions between simultaneously activated neurons illustrates both the gain in orientation selectivity (Figs. 2 and 3), and the optimization of farfield diversity and nearfield conformity (Figs. 4 and 5). The results are compatible with the actual distribution of blob-centered d- and l-hypercolumns, iso-orientation modules and orientation fractures in the monkey. A surprisingly similar distribution of blobless d- and l-hypercolumns is expected in the absence of the colour system. Applied to the apparently blobless cortex of the cat, the scheme explains the modulation of deoxyglucose uptake along the iso-orientation bands in a report of L{\"o}wel, Freeman, and Singer.}, department = {Department G{\"o}tz}, web_url = {http://link.springer.com/content/pdf/10.1007\%2FBF00364127}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, DOI = {10.1007/BF00364127}, author = {G{\"o}tz, KG} } @Article { 1277, title = {Independent spatial waves of biochemical differentiation along the surface of chicken brain as revealed by the sequential expression of acetylcholinesterase}, journal = {Cell and Tissue Research}, year = {1988}, month = {3}, volume = {251}, number = {3}, pages = {587-595}, abstract = {AChE-positive cells suddenly amass in a superficial layer of the neuroepithelium; this layer finally covers, in a sheat-like manner, the entire surface of the embryonic chicken brain. This feature is functionally not understood; however, it appears shortly after the neurons become post-mitotic, and the lateral extensions of this layer can easily be traced using histochemistry on serial brain sections. The layer can therefore be exploited to delineate spatially the waves of onset of biochemical tissue differentiation. We have studied whole brains between stages 11 and 30 and provide the first complete spatial schemes of brain differentiation based on computer-reconstructed, two- and three-dimensional maps. The brain does not differentiate in one smooth coherent wave, but instead five separate primary AChE-activation zones are detected: the first originating at stage 11 (ldquorhombencephalic waverdquo), the second at the same time (ldquomidbrain waverdquo), the third at stage 15 (''ldquotectal waverdquo). A fourth zone develops later, at stage 18, from the bottom part of the telencephalon to the top. Retinal development also starts at stage 18. In a given area, it appears that AChE-development shortly precedes that of the formation of major fiber tracts. AChE might therefore represent a prerequisite for fiber growth and pathfinding.}, url = {http://www.kyb.tuebingen.mpg.de/fileadmin/user_upload/files/publications/independent_spatial_waves_of_biochemical_differentiation_1277[0].pdf}, department = {Department G{\"o}tz}, web_url = {http://www.springerlink.com/content/n5226k8p6n6jhw55/fulltext.pdf}, institute = {Biologische Kybernetik}, organization = {Max-Planck-Gesellschaft}, DOI = {10.1007/BF00214007}, author = {Layer, PG and Rommel, S and B{\"u}lthoff, HH and Hengstenberg, R} } @Article { 1281, title = {Mechanosensory control of compensatory head roll during flight in the blowfly Calliphora erythrocephala Meig}, journal = {Journal of Comparative Physiology A}, year = {1988}, month = {3}, volume = {163}, number = {2}, pages = {151-165}, abstract = {In the blowflyCalliphora flying stationarily in a wind tunnel, compensatory head movements were elicited by rolling the fly about its longitudinal axis (Fig. 1). Responses were recorded on video tape, and evaluated by single frame analysis. Active head movements were observed in response to visual and mechanosensory stimuli (Fig. 2). They are not made or caused by the head's inertial momentum (Fig. 11). Gravity, used by walking flies to align their head with the vertical, does not seem to be perceived during flight (Figs. 3–6) but has a passive stabilizing effect upon the flight attitude (Fig. 7). A difference in aerodynamical load of the two wings elicits a transient head roll partly compensating a banked attitude (Figs. 4–6). The majority of campaniform sensilla at the wing base seems suitable to measure wing load. Steady roll motion elicits a steady compensatory head roll which does not vanish even after 8 min of rotation at constant angular velocity (Fig. 8). Roll motion is most efficient at high roll speeds (100‡/s