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100			_aNakamura, Shinji _949264
245			_aPerceived Rigidity Significantly Affects Visually Induced Self-Motion Perception (Vection)/
260			_bsage _c2019
300			_aVol 48, Issue 5, 2019: ( 386-401 p.).
520			_aWhen an observer sees a uniformly moving visual stimulus, he or she typically perceives an illusory motion of his or her body in the opposite direction (vection). In this study, the effects of the visual inducer’s perceived rigidity were examined using a horizontal sine wave-like line stimulus moving horizontally. Lowering the sine wave amplitude resulted in the perception of a less rigid visual stimulus motion, although the stimulus was always set to move completely rigidly. The psychophysical experiment revealed that visual self-motion perception was weaker in the lower amplitude condition where the visual stimulus was perceived as less rigid. The follow-up experiments showed that the effects of sine wave amplitude manipulation were unrelated to the modulation of the perceived speed. Furthermore, small gaps inserted into the sine waves effectively increased the perceived rigidity and resulted in a strong self-motion perception even in the lower amplitude condition. The current investigation, together with previous studies, clearly demonstrated that perceived features, in addition to the physical ones, play a key role in visual self-motion perception. Visual stimuli, perceived as more rigid, provide a more reliable frame of reference in the observers’ spatial orientation, determining their self-motion perception.
650			_avection, _949265
650			_amotion perception, _949266
650			_aself-motion, _949267
650			_a perceived rigidity _949268
773	0		_012374 _916462 _dSage, _tPerception _x1468-4233
856			_uhttps://doi.org/10.1177/0301006619846410
942			_2ddc _cART
999			_c12430 _d12430