Cormack R, Blake R, Hiris E
Department of Psychology, New Mexico Institute of Mining and Technology, Soccoro 87801.
Vision Res. 1992 Jan;32(1):73-80. doi: 10.1016/0042-6989(92)90114-x.
An object moving against a textured background is accurately perceived when viewed foveally, but when viewed peripherally the object's perceived direction of motion may deviate from veridical by as much as 90 deg. The illusory direction is oblique to the orientation of the background contours, which may themselves be moving or stationary. In several experiments, we examined the boundary conditions for occurrence of the illusion and tested hypotheses concerning its basis. This illusion of perceived direction dramatizes differences in motion processing between the fovea and the periphery.
当一个物体在有纹理的背景上移动时，若通过中央凹注视观察，其运动能被准确感知，但通过周边视野观察时，该物体的感知运动方向可能会与实际方向偏差多达90度。这种错觉方向与背景轮廓的方向呈斜交，背景轮廓本身可能是运动的，也可能是静止的。在几个实验中，我们研究了这种错觉出现的边界条件，并检验了关于其产生基础的假设。这种感知方向的错觉凸显了中央凹和周边视野在运动处理上的差异。
