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Contact

Dr. phil. Martin Dobricki

Address: Spemannstrasse 38
72076 Tübingen
Room number: 103
Phone: +49 7071 601 605
Fax: +49 7071 601 616
E-Mail: martin.dobricki

 

Picture of Dobricki, Martin, Dr. phil.

Martin Dobricki

Position: Project Leader  Unit: Bülthoff

I co-lead the Perception and Action in Virtual Environments group together with Betty Mohler.

 

My main research interest is focused on the investigation of human multisensory body self-perception.

 

My research methodology is focused on the development of ecologically valid immersive Virtual Reality (iVR) setups for studying body self-perception. Additionally, I develop iVR setups for clinical research.

 

 

My current research includes:

- studies on the components of conscious body self-perception

- studies on optically induced bodily self-motion perception (vection)

- studies on the experience of sensorimotor control

- studies on the perception of the own face

 

My current methodological developments include:

- virtual reality setups for the study of body self-perception

- virtual reality setups for experimental psychopathology

- a psychophysical procedure to measure face self-perception

- a psychophysical procedure to measure body-environment discrimination

A. The structure of conscious body self-perception

 

What are the basic constituents of conscious body self-perception? This question concerns the structure of conscious body self-perception and has so far received little attention.


In order to investigate conscious full-body self-perception I use virtual reality technology to experimentally alter body self-perception. First, I induce the “embodiment” of a distant virtual body in healthy individuals. Second, I quantify this experience of a full-body illusion by means of psychometric self-assessment questionnaires.


The experimental setup: The experimenter strokes the physical back of a female participant
while she watches, on a head-mounted display, a virtual body from behind being simultaneously
stroked (side view) with a virtual stick. (image source: doi:10.1371/journal.pone.0083840.g001)


We have developed a state-of-the-art psychometric questionnaire for the measurement of body self-perception during full-body illusions. Using this questionnaire we have found that conscious body self-perception has the three components: bodily self-identification, spatial self-perception (spatial presence), and agency (Dobricki and de la Rosa, 2013).

 

B. Optically induced bodily self-motion perception (vection)


In order to investigate the perceptual mechansims that shape body self-perception I have designed a virtual reality setup in which I quantify changes in multisensory body self-perception by inducing and measuring vection. In order to induce for example circular vection I rotate the entire optical environment around the body of healthy individuals that are perceiving this in a head-mounted display.

 

We induce circular vection by rotating the entire optical environment around the physical
body of the observer. The white dot indicates the position of the observer. The white arrow
indicates the motion of the environment and the black arrow indicates the resulting exprience
of bodily self-rotation. Please download a movie of this procedure here: circular vection.

 

We have found that the experience of vection is changed when the components of conscious body self-perception described above are altered (Dobricki, Mohler & Buelthoff, in rev.).

 

C. Dynamic body self-perception


I have developed a virtual reality setup in which individuals can fully control a distant virtual body with their own physical body (Dobricki, in prep.). I am using this setup to investigate the perceptual mechanisms underlying the human experience of sensori-motor control.

 

 

D. Experimental Psychopathology


I develop Immersive Virtual Reality setups for psychiatric research that can be used to experimentally investigate the perceptual mechansims that are active when individuals suffer from psychopathological symptomes, e.g., when they suffer from stress-related mental disorders such as adjustment disorders (Dobricki, Komproe, de Jong & Maercker, 2010).

 

The purpose of the following virtual reality setup is to investigate the effect of stressfull life-events on perception, especially on multisensory body self-perception.

 

 

E. Psychophysical face self-perception


3D scan of a face

In order to investigate bodily self-perception I have developed a psychophysical procedure to measure the perception of one’s own face (Dobricki and Mohler, in prep.).

 

In the framework of this face perception task individuals are asked to judge facial stimuli that are based on a 3D laser scan of their own face.

Education


2008     Doctorate at the University of Zurich

2003     Master of Science at the University of Zurich

 

Academic positions


2012 -           Co-leader of the PAVE group at the Max Planck Institute for Biological Cybernetics

2011 - 2012    Postdoc at the Max Planck Institute for Biological Cybernetics

2009 - 2011    Research fellow at the research station Agroscope Reckenholz-Tänikon ART

2007 - 2008    Postdoc at the department for psychopathology, University of Zurich

2007 - 2008    Research fellow at the department for applied psychology, University of Zurich

2006 - 2006    Research fellow at the dep. for applied cognitive psychology, University of Zurich

2004 - 2008    PhD candidate at the Psychological Institute of the University of Zurich

 

Clinical positions

 

2006             Psychologist at the Medical Center Geissberg, Kloten

 

Teaching

 

2006 - 2008    Lecturer in experimental psychology and psychopathology, University of Zurich

 

Grants


2013 - 2014    Postdoc fellowship from the Max Planck Society

2011 - 2013    Postdoc fellowship from the Swiss National Science Foundation

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Books (1):

Dobricki M. Person: Kinder der Relativität: Humanexperimentelle Untersuchungen zu Modulationen visueller Strukturen, 148, Südwestdeutscher Verlag für Hochschulschriften, Saarbrücken, Germany, (2009). ISBN: 978-3-8381-0527-7

Articles (10):

Dobricki M Person (January-2014) Changes in psychophysical self-other face discrimination during alterations of conscious bodily self-identification - . in preparation
Dobricki M Person (January-2014) Dynamical full-body self-perception - . in preparation
Dobricki M Person, Mohler B Person and Bülthoff HH Person (January-2014) Body-environment discrimination: A novel hypothesis on multisensory self-perception Frontiers in Human Neuroscience . in revision
Dobricki M Person and de la Rosa S Person (December-2013) The structure of conscious bodily self-perception during full-body illusions PLoS ONE 8(12) 1-9.
Dobricki M Person (September-2013) Basic human values in the Swiss population and in a sample of farmers Swiss Journal of Psychology 70(3) 119–127.
Dobricki M Person and Lips M (January-2012) Communication in Swiss farming cooperatives Journal of Rural Cooperation 40(1) 29-43.
Baur I , Dobricki M Person and Lips M (September-2010) Strategies de haute performance et de pature integrale Recherche Agronomique Suisse 1(9) 236-333.
Dobricki M Person and Maercker A (May-2010) (Post-traumatic) embitterment disorder: Critical evaluation of its stressor criterion and a proposed revised classification Nordic Journal of Psychiatry 64(3) 147-152.
Dobricki M Person, Komproe IH , de Jong JTVM and Maercker A (January-2010) Adjustment disorders after severe life-events in four postconflict settings Social Psychiatry and Psychiatric Epidemiology 45(1) 39-46.
Maercker A and Dobricki M Person (May-2008) Anpassungsstörungen: Neue Impulse für eine alte Tradition Psychosomatik und Konsiliarpsychiatrie 2(2) 67-68.

Contributions to books (2):

Dobricki M Person: Sensorische Deprivation, 175. In: Pschyrembel Psychiatrie, Klinische Psychologie, Psychotherapie, (Ed) J. Margraf, de Gruyter, Berlin, Germany, (2009).
Dobricki M Person: Veränderter Wachbewusstseinszustand, 887. In: Pschyrembel Psychiatrie, Klinische Psychologie, Psychotherapie, (Ed) J. Margraf, de Gruyter, Berlin, Germany, (2009).

Posters (8):

Dobricki M Person, Mohler BJ Person and Bülthoff HH Person (August-2012): Onset time of visually induced circular self-motion perception as an indicator for altered self-localization in immersive virtual reality, 12th Annual Meeting of the Vision Sciences Society (VSS 2012), Naples, FL, USA, Journal of Vision, 12(9) 1326.
Dobricki M Person and Maercker A (August-2009): Adjustment disorders after severe life events in 4 postconflict settings, 11th Congress of the Swiss Society of Psychology, Interactions: Real and Virtual, Neuchâtel, Switzerland.
Dobricki M Person and Dittrich A (August-2009): Relativity in Oneself: The role of mental age for the cognition of optical illusions, 11th Congress of the Swiss Society of Psychology, Interactions: Real and Virtual, Neuchâtel, Switzerland.
Iris P , Möhring A , Dobricki M Person and Lips M (August-2008): Success factors for farming collectives, 12th Congress of the European Association of Agricultural Economists (EAAE 2008), Ghent, Belgium.
Läge D , Dobricki M Person and Häne M (June-2008): Multiple choice tests in distance learning: Solving the problem of poorly evaluated question pools through nonmetric multidimensional scaling, Annual Conference European Distance and E-Learning Network, New Learning Cultures: How do we learn? Where do we learn? (EDEN 2008), Lisboa, Portugal.
Maercker A , Dobricki M Person and Forstmeier S (March-2008): Anpassungsstörungen: Stand der Dinge, 59. Jahrestagung des Deutschen Kollegiums für Psychosomatische Medizin (DKPM) und 16. Jahrestagung der Deutschen Gesellschaft für Psychosomatische Medizin und Ärztliche Psychotherapie (DGPM): Bindung und Entwicklung, Freiburg i. Br., Germany, Psychologische Medizin, 19(Sondernummer) 15.
Dobricki M Person, Häne M and Läge D (September-2007): Multiple choice tests: Who passed the test and who didn't? A new solution of an old problem, 10th Congress of the Swiss Society of Psychology: Differences, Diversity and Change, Zürich, Switzerland.
Hasler F , Dobricki M Person, Grimberg U and Vollenweider FX (July-2003): Cognitive and psychopathological aspects of the 5-HT2A model experimental psychosis, Summer Meeting of the British Association for Psychopharmacology, Cambridge, UK, Journal of Psychopharmacology, 17(Supplement) A44.

Theses (2):

Dobricki M Person: Humanexperimentelle Untersuchungen zu Modulationen figural-optischer Strukturen durch Alteration des Bewusstseinszustandes, Universität Zürich: Psychologisches Institut, (March-2008). PhD thesis
Dobricki M Person: Der Einfluss von Psilocybin auf kognitive Funktionen und weitere psychologische Parameter: Eine Dosis-Effekt-Studie, Universität Zürich: Psychologisches Institut, (2003). Master thesis

Talks (8):

Dobricki M Person (March-11-2014) Invited Lecture: The structure of conscious body self-perception, Universitat de Barcelona: Experimental Virtual Environments (EVENT) Lab for Neuroscience and Technology, Barcelona, Spain.
Dobricki M Person (February-12-2014) Invited Lecture: Multisensorische Körperselbstwahrnehmung, Philipps-Universität Marburg, Marburg, Germany.
Dobricki M Person (July-17-2013) Invited Lecture: Multisensory self-perception, Universitätsklinik für Psychiatrie und Psychotherapie, Tübingen, Germany.
Dobricki M Person, Mohler BJ Person and Bülthoff HH Person (September-7-2012) Abstract Talk: The ownership of a virtual body induced by visuo-tactile stimulation indicates the alteration of self-boundaries, 5th International Conference on Spatial Cognition (ICSC 2012), Roma, Italy, Cognitive Processing, 13(Supplement 1) S18.
Dobricki M Person, Mohler BJ Person and Bülthoff HH Person (June-22-2012) Abstract Talk: The structure of self-experience during visuo-tactile stimulation of a virtual and the physical body, 13th International Multisensory Research Forum (IMRF 2012), Oxford, UK, Seeing and Perceiving, 25(0) 214.
Dobricki M Person (July-20-2010) Invited Lecture: Boundary Expansion within Virtual Reality, Max-Planck Institut für Biologische Kybernetik, Tübingen, Germany.
Dobricki M Person, Komproe IH , de Jong JTVM and Maercker A (May-24-2008) Abstract Talk: Severe life-events and Adjustment Disorders in 4 Postconflict Settings, 10. Jahrestagung der Deutschsprachigen Gesellschaft für Psychotraumatologie (DeGPT): Psychisches Trauma – körperliches Leiden (Trauma 2008), Basel, Switzerland 39.
Dobricki M Person (April-2002) Invited Lecture: Dose-effect relations of Psilocybin in humans, 9. Symposion des Europäischen Collegiums für Bewusstseinsstudien (ECBS 2002), Frankenthal, Germany.

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Last updated: Friday, 17.01.2014