Accession Number : ADA263280


Title :   Pilot Studies on Object Motion Perception During Linear Self-Motion After Long Duration Centrifugation of Human Subjects


Descriptive Note : Final rept.


Corporate Author : INSTITUTE FOR PERCEPTION RVO-TNO SOESTERBERG (NETHERLANDS)


Personal Author(s) : Wertheim, A H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a263280.pdf


Report Date : 01 Feb 1993


Pagination or Media Count : 34


Abstract : Four experiments are reported. They were carried out with the purpose of investigating whether we could use and optimize a particular experimental paradigm to investigate the effects of long duration centrifugation of human subjects. The method involved the psychophysical measurement of visual thresholds for perceiving object motion during self-motion on a linear track sled (acquired by the TNO Institute for Perception from the European Space Agency). Since the experiments were of a preliminary nature-we cannot (yet) draw definite conclusions as to their theoretical interpretation. Nevertheless it can be concluded that we have indeed developed an optimal method. In addition, we have arrived at two hypotheses, which can be tested in further research. According to the first hypothesis, long duration centrifugation affects the way in which visual information interacts with otolith reactivity. According to the second hypothesis, subjects who rely largely on visual information for a correct percept of egomotion are more susceptible to centrifuge induced sickness than others.


Descriptors :   *MOTION , *CENTRIFUGES , *VISUAL PERCEPTION , *THRESHOLDS(PHYSIOLOGY) , MEASUREMENT , MOTION SICKNESS , OTOLOGY , TRACKS , SLEDS , PSYCHOPHYSICS , PILOT STUDIES , HYPOTHESES , REACTIVITIES , HUMANS


Subject Categories : Psychology
      Medicine and Medical Research
      Stress Physiology


Distribution Statement : APPROVED FOR PUBLIC RELEASE