Perceived gravitoinertial force during vection

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Abstract

Background: When we ride on a roller coaster, our experience of selfmotion is accompanied by salient changes in gravitoinertial force. Here we examined whether a similar relationship exists between visually induced self-motion (vection) and perceived gravitoinertial force. Methods: There were 15 stationary subjects, each wearing a weight jacket, who were exposed to visual displays simulating upward, backward, or no self-motion. At the end of each 30-s display exposure, subjects: 1) rated the strength of their vection experience; and 2) had the experimenter add/remove weights from their weight jackets to recreate their perceived weight during exposure to the stimulus display. Results: We found that upward vection increased and downward vection decreased perceived weight. Importantly, the size of these perceived weight changes depended on the strength of the vection experience. Conclusions: We conclude that the observed strong relationship between vection and perceived weight stems from the brain's attempt to reconcile the inputs from the different self-motion senses. The current findings have important implications for all simulated self-motions either in virtual reality or in vehicle simulators (particularly fixed-base flight and driving simulators).

Original languageEnglish
Pages (from-to)971-974
Number of pages4
JournalAviation Space and Environmental Medicine
Volume84
Issue number9
DOIs
Publication statusPublished - Sep 11 2013

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All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health

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