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Psychophysical experiments in a complex virtual environment

MPG-Autoren
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von der Heyde,  M
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Zitation

von der Heyde, M. (1998). Psychophysical experiments in a complex virtual environment. In Third PHANToM Users Group Workshop (pp. 101-104). Cambridge, MA, USA: Massachusetts Institute of Technology.


Zusammenfassung
We are using two PHANToM 3.0 force feedback devices in one workspace in order to perform studies of one-hand precision grip tasks or two handed pointing tasks. The visual environment is rendered by an Onyx workstation and presented in a specialized stereo head mounted display that allows eye tracking. The head position and orientation is tracked with an electromagnetic system (Fastrak). Together, these systems allow the current gaze direction in world coordinates to be computed in real time. The artificial visual and haptic environment may contain free movable objects as well as stationary parts, whereas the objects can be complex or simple. The graphical user interface allows all object properties to be changed online. In addition, we are using free programmable force effects that depend on position or velocity information. Psychophysical experiments that simulate eye-hand coordination in complex 3D scenes demonstrate results that seem to be in line with previous research in real environments. Thus, we believe that the dual-PHANToM instrument is an experimental device that is well suited for various studies of visual motor coordination, with special reference to aspects like timing and adaptation.