Enhancement of horizontal motion detection sensitivity by vertical illusory motion component(Summary of Awarded Presentation at the 27th Annual Meeting)
スポンサーリンク
概要
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Visual motion information passes through several distinct processing stages, but the stage where the perceptual limit of motion detection arises is still unknown. We tested how vertical illusory motion affects the detection of horizontal motion. We presented a central Gabor patch moving horizontally, together with a surrounding grating moving vertically. The central stimulus is perceived as moving obliquely by integration between the physical and illusory motion induced by the surrounding motion. The participants were asked to judge the horizontal motion component of the central stimulus (left vs. right). We found motion detection performance was enhanced at a moderate surrounding speed in comparison with baseline condition where the surrounding stimulus was statisnary. The results suggest that the later stage where motion integration and center-surround interaction appears, is critical for determining motion detection performance.
- 2009-09-30
著者
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