G de Wit's research while affiliated with University of Amsterdam and other places
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Publications (4)
The upright position in man is maintained by motoric proprioception, the eyes and the labyrinth. The influence of misleading optical information on balance and on the perception of space is studied in healthy subjects using a swayable dummy room as a misleading optic stimulus and a stabilometer to monitor the position of the centre of gravity. The...
A case of juvenile angiofibroma occurring in a male patient of 49 years is described. Histopathology and oncogenesis are discussed.
Citations
... For example, if a seated, immobile subject actively moves his feet in contact with a horizontal surface rotating under his seat and periodically steps them back, the illusion's compellingness increases significantly (Lackner and DiZio 1984). A particular form of this latter paradigm is 'apparent stepping around' where subjects (Ss) in the dark walk along the rim of rotating platform in the opposite direction while holding with their hands to a stationary bar (Bles and Kapteyn 1977;Bles and de Witt 1978;Bles 1981) so as to remain stable in space (circular 'treadmill stepping'). Apparent stepping around reportedly approaches oCV with regard to compellingness. ...
... As noted earlier, postural readjustment responses are also commonly observed in vection settings, and their characteristics can be used to assess the degree of vection experienced by an observer in a given situation. These types of metrics are derived from quantitative measures of the observer's reflex-like reactions to perceived motion in which body sway and/or other forms of postural control activity are the most common response (e.g., Bles & DeWit, 1976;Dichgans & Brandt, 1978;Stoffregen, Hettinger, Haas, Roe, & Smart, 2000). Under conditions of sufficient stimulus magnitude and/or duration, it is not unusual to observe subjects losing functional postural control and eventually falling or collapsing (Lee & Aronson, 1974;Lestienne et al., 1977). ...
Reference: Illusory Self-Motion in Virtual Environments
