Ohtani Y, Ejima Y
Laboratory of Psychology, Institute of Technology, Matsugasaki, Japan.
Vision Res. 1997 Mar;37(6):765-7. doi: 10.1016/s0042-6989(96)00242-8.
Direction discrimination (upward/downward or left/right) for a Gabor patch in a two-frame motion display was measured as a function of the inter-frame displacement size of the component grating with the stimulus position (center, left, right, upper and lower visual fields) as a parameter. The results showed that, for vertical motion in the center, left, right and lower visual fields, the observers saw downward motion more frequently than upward motion, whereas for vertical motion in the upper field and for horizontal motion, no preference for one of the two opposite directions was obtained. Human motion vision is anisotropic in the lower half of the visual field.
在双帧运动显示中，以刺激位置（中央、左、右、上和下视野）为参数，测量了加博尔光斑块的方向辨别（向上/向下或向左/向右）与组成光栅的帧间位移大小的函数关系。结果表明，对于中央、左、右和下视野中的垂直运动，观察者看到向下运动的频率高于向上运动，而对于上视野中的垂直运动和水平运动，未发现对两个相反方向之一有偏好。人类运动视觉在视野的下半部分是各向异性的。
