운동지각에 대한 시각 및 체성감각간의 가중치 정량화

Abstract

Human uses various sensory signals in perceiving body movement. To percieve movement, the CNS uses signals with proper weighting, and this system can be changed by cognition and conditions of body, which is called "sensory reweighting". The purpose of study was examining sensory reweighting when human do not trust vision, and we quantified each sensory signal"s weight. Ten healthy male volunteers were instructed that respond perception of movement direction on moving platform accelerated at 0.1㎐ with 2mG magnitude near threshold. Visual stimulus was consisted of headtracked visions and reversed visions, and they are randomly sequenced. In first experiment, subjects did not cognize that vision could be reversed, and subjects were aware of it in second experiment. Other signal"s weights increased when subjects did not trust vision, but vision was still dominant sensory signal. The results imply that visiual cues are still dominant in motion perception although human do not trust vision.