Schor C M, Wood I C, Ogawa J
Vision Res. 1984;24(6):573-8. doi: 10.1016/0042-6989(84)90111-1.
The range of spatial tuning for channels that process static and dynamic disparities was investigated in the central visual field by measuring stereoscopic thresholds as a function of the difference in size of spatially filtered bar-like patterns presented to the two eyes. Spatial tuning functions were revealed by an elevation of stereothreshold as the difference between the widths of bar patterns increased. Functions tuned to low spatial frequencies (0.075-2 c/deg) were classified as transient since their stereosensitivity was greater for dynamic (1 Hz) than static disparities. Functions tuned to high spatial frequencies (2.4-19 c/deg) were classified as sustained since their stereosensitivity was equal for dynamic and static disparities. When equal width patterns were presented to the two eyes, stereothreshold increased with spatial periods greater than 0.4 deg according to a constant 6 deg phase disparity. This size-disparity correlation suggests that large disparities are processed by spatial filters tuned to disparities proportional to their receptive field dimensions.
通过测量立体视觉阈值作为呈现给双眼的空间滤波条形图案大小差异的函数，研究了中央视野中处理静态和动态视差的通道的空间调谐范围。随着条形图案宽度差异的增加，立体视觉阈值升高，从而揭示了空间调谐函数。调谐到低空间频率（0.075 - 2周/度）的函数被归类为瞬态，因为它们对动态（1赫兹）视差的立体敏感性大于静态视差。调谐到高空间频率（2.4 - 19周/度）的函数被归类为持续态，因为它们对动态和静态视差的立体敏感性相等。当向双眼呈现等宽图案时，根据恒定的6度相位视差，立体视觉阈值随着空间周期大于0.4度而增加。这种大小 - 视差相关性表明，大视差是由调谐到与其感受野尺寸成比例的视差的空间滤波器处理的。
