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% Creation date: 2013-06-18
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@Article { RamatNVCMBB2011,
   title = {A new device to assess static ocular torsion},
   journal = {Annals of the New York Academy of Sciences},
   year = {2011},
   month = {9},
   volume = {1233},
   pages = {226-230},
   abstract = {In clinical settings, static ocular torsion is assessed by taking a fundus photograph and measuring the angle between a horizontal line and the line connecting the fovea to the head of the optic nerve (centro-cecal axis rotation; CCAR). We developed and tested a system specifically aimed at CCAR measurements, based on low-cost commercial hardware, and that implements an adaptive research algorithm that selects and presents bright dots on a monitor to outline the borders of the blind spot, locate its center, and measure CCAR. We examined 10 healthy subjects who underwent four CCAR measurements to evaluate the reliability of the system and compared our results with those of fundus photographic examination. Our data showed an excyclophoria, with mean ocular torsion of 6.4\(^{\circ}\) in the right and 6.7\(^{\circ}\) in the left eye. These values are in keeping with those in the literature. Moreover, the values of the intraclass correlation coefficients suggest excellent reliability of the technique.},
   web_url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.2011.06157.x/pdf},
   DOI = {10.1111/j.1749-6632.2011.06157.x},
   author = {Ramat, S and Nesti, A and Versino, M and Colnaghi, S and Magnaghi, C and Bianchi, A and Beltrami, G}
}

@Inproceedings { NestiMBRBP2012,
   title = {Roll rate thresholds and perceived realism in driving simulation},
   year = {2012},
   month = {9},
   pages = {1-6},
   abstract = {Due to limited operational space, in dynamic driving simulators it is common practice to implement motion cueing algorithms that tilt the simulator cabin to reproduce sustained accelerations. In order to avoid conflicting inertial cues, the tilt rate is kept below drivers’ perceptual thresholds, which are typically derived from the results of classical vestibular research where additional sensory cues to self-motion are removed. Here we conduct two experiments in order to assess whether higher tilt limits can be employed to expand the user’s perceptual workspace of dynamic driving simulators. In the first experiment we measure detection thresholds for roll in conditions that closely resemble typical driving. In the second experiment we measure drivers’ perceived realism in slalom driving for sub-, near- and supra-threshold roll rates. Results show that detection threshold for roll in an active driving task is remarkably higher than the limits currently used in motion cueing algorithms to drive simulators. Supra-threshold roll rates in the slalom task are also rated as more realistic. Overall, our findings suggest that higher tilt limits can be successfully implemented in motion cueing algorithms to better optimize simulator operational space.},
   url = {http://www.kyb.tuebingen.mpg.defileadmin/user_upload/files/publications/2012/DSC-2012-Nest.pdf},
   department = {Department B{\"u}lthoff},
   web_url = {http://dsc2010.ensam.eu/},
   event_place = {Paris, France},
   event_name = {Driving Simulation Conference Europe (DSC 2012)},
   author = {Nesti, A and Masone, C and Barnett-Cowan, M and Robuffo Giordano, P and B{\"u}lthoff, HH and Pretto, P}
}

@Poster { NestiBPB2012,
   title = {Human sensitivity to different motion intensities},
   year = {2012},
   month = {11},
   volume = {13},
   pages = {27},
   abstract = {Sensory information processes leading to human self-motion perception have been modelled in the past in terms of visual and inertial stimulations and their interactions. The models, validated through many psychophysical experiments, rely on the assumption that our sensitivity
to supra-threshold self-motion is not affected by motion intensity. In other words, the relationship between motion stimulus intensity and human sensitivity to motion is assumed to be linear. However, recent studies have shown that this relationship is non-linear, in particular at higher motion intensity. Therefore, the implementation of nonlinearities in the computational models of human motion perception would increase their accuracy over a wider range of motion stimulus intensity. Here we test human sensitivity for sinusoidal yaw rotation in darkness at frequencies of 0.5 Hz and 1 Hz and velocity amplitudes ranging between 0 and 90 deg/s. In a two interval force choice experimental paradigm, subjects undergo two consecutive rotations in the same direction for each trial. One of these movements is repeated unchanged in every trial, while the other systematically varies in amplitude. Subjects are asked to report after each trial which one of the two movements was stronger. An adaptive staircase adjusts the motion for every trial to identify the smallest detectable change in stimulus intensity (differential threshold). Results show a power law relationship between
differential thresholds and stimulus intensity, meaning that sensitivity decreases as motion becomes stronger. No frequency effect is observed. These findings are of particular interest for the field of vehicle motion simulation, where knowledge about self-motion perception is widely exploited to overcome the physical limitations of motion-based simulators. Furthermore, the identification of perceptual nonlinearities in multisensory stimulation will guide future work into understanding the neural mechanisms responsible for self-motion perception.},
   department = {Department B{\"u}lthoff},
   web_url = {http://www.neuroschool-tuebingen-nena.de/},
   event_place = {Schramberg, Germany},
   event_name = {13th Conference of the Junior Neuroscientists of T{\"u}bingen (NeNA 2012)},
   author = {Nesti, A and Beykirch, K and Pretto, P and B{\"u}lthoff, HH}
}

@Poster { NestiBBP2012,
   title = {Roll rate thresholds in driving simulation},
   journal = {Seeing and Perceiving},
   year = {2012},
   month = {6},
   day = {21},
   volume = {25},
   pages = {167},
   abstract = {The restricted operational space of dynamic driving simulators requires the implementation of motion cueing algorithms that tilt the simulator cabin to reproduce sustained accelerations. In order to avoid conflicting inertial cues, the tilt rate is limited below drivers’ perceptual thresholds, which are typically derived from the results of classical vestibular research, where additional sensory cues to self-motion are removed. These limits might be too conservative for an ecological driving simulation, which provides a variety of complex visual and vestibular cues as well as demands of attention which vary with task difficulty.
We measured roll rate detection threshold in active driving simulation, where visual and vestibular stimuli are provided as well as increased cognitive load from the driving task. Here thresholds during active driving are compared with tilt rate detection thresholds found in the literature (passive thresholds) to assess the effect of the driving task. In a second experiment, these thresholds (active versus passive) are related to driving preferences in a slalom driving course in order to determine which roll rate values are most appropriate for driving simulators so as to present the most realistic driving experience.
The results show that detection threshold for roll in an active driving task is significantly higher than the limits currently used in motion cueing algorithms, suggesting that higher tilt limits can be successfully implemented to better optimize simulator operational space. Supra-threshold roll rates in the slalom task are also rated as more realistic. Overall, our findings indicate that increasing task complexity in driving simulation can decrease motion sensitivity allowing for further expansion of the virtual workspace environment.},
   department = {Department B{\"u}lthoff},
   talk_type = {Abstract Talk},
   web_url = {http://booksandjournals.brillonline.com/content/10.1163/187847612x647973},
   event_place = {Oxford, UK},
   event_name = {13th International Multisensory Research Forum (IMRF 2012)},
   DOI = {10.1163/187847612X647973},
   author = {Nesti, A and Barnett-Cowan, M and B{\"u}lthoff, HH and Pretto, P}
}

@Poster { NestiBMB2012,
   title = {Differential Thresholds for Vertical Motion},
   year = {2012},
   month = {1},
   volume = {22},
   number = {12},
   department = {Department B{\"u}lthoff},
   web_url = {http://www.vertigocenter.ch/ZuMu2012/pres.html\#Posters},
   event_place = {Z{\"u}rich, Switzerland},
   event_name = {22nd Okulomotoriktreffen Z{\"u}rich-M{\"u}nchen (Z{\"u}M{\"u} 2012)},
   author = {Nesti, A and Barnett-Cowan, M and MacNeilage, P and B{\"u}lthoff, HH}
}

@Conference { NestiB2011,
   title = {Instrumentation for the evaluation of the centro-cecal axis rotation to assess static ocular torsion},
   year = {2011},
   month = {9},
   day = {24},
   event_place = {T{\"u}bingen, Germany},
   event_name = {Max Planck Institute for Biological Cybernetics},
   author = {Nesti, A and Beltrami, G}
}