Galvin S J, Williams D R, Coletta N J
Department of Psychology, University of Otago, Dunedin, New Zealand.
Vision Res. 1996 Aug;36(15):2283-95. doi: 10.1016/0042-6989(95)00291-x.
Motion reversal effects (the apparent reversal of the direction of motion of a high frequency sinusoidal grating) have been attributed to aliasing by the cone mosaic [Coletta et al. (1990). Vision Research, 30, 1631-1648] and postreceptoral layers [Anderson & Hess (1990). Vision Research, 30, 1507-1515] in human observers. We present data and a new model which suggest that at least two sampling arrays of different densities affect direction discrimination out to 30 degrees eccentricity. The first sampling layer matches anatomical estimates of the cone density. The second sampling layer is too dense to be the parasol cells alone; midget ganglion cells certainly contribute to this task. This is further evidence that motion perception is not mediated exclusively by the magnocellular stream.
运动反转效应（高频正弦光栅运动方向的明显反转）在人类观察者中被认为是由视锥细胞镶嵌[科莱塔等人（1990年）。《视觉研究》，30，1631 - 1648]和感受器后层[安德森和赫斯（1990年）。《视觉研究》，30，1507 - 1515]的混叠现象导致的。我们展示了数据和一个新模型，该模型表明至少两个不同密度的采样阵列会影响高达30度偏心率的方向辨别。第一个采样层与视锥细胞密度的解剖学估计值相匹配。第二个采样层过于密集，不可能仅由伞状细胞构成；侏儒神经节细胞肯定参与了这项任务。这进一步证明了运动感知并非仅由大细胞通路介导。
