Srebro R
Vision Res. 1986;26(12):1909-23. doi: 10.1016/0042-6989(86)90117-3.
Two stimuli whose log-complex transform images in striate cortex are orthogonal square-wave gratings cause responses of equal magnitude in striate cortex but of unequal magnitude in extra-striate cortex. However, two other stimuli, orthogonal square-wave gratings in visual space, whose log transform images are identical except for phase shift, cause responses of equal magnitude in both striate and extra-striate cortex. A phase shift in the log-complex transform image represents a change either in the size or orientation of a form in visual space, parameters that do not affect its intrinsic shape. A change in the orientation of a contour line in the log-complex image represents either a change in the intrinsic shape of a form or its translation in visual space. Thus the results suggest that the extrastriate response may be related to the shape of an object in visual space.
在纹状皮层中，对数复变换图像为正交方波光栅的两种刺激，在纹状皮层中引起的反应幅度相等，但在纹外皮层中引起的反应幅度不等。然而，另外两种刺激，即视觉空间中的正交方波光栅，其对数变换图像除了相位偏移外完全相同，在纹状皮层和纹外皮层中都引起幅度相等的反应。对数复变换图像中的相位偏移表示视觉空间中某种形式的大小或方向发生了变化，这些参数不会影响其固有形状。对数复图像中轮廓线方向的变化表示某种形式的固有形状发生了变化，或者表示其在视觉空间中的平移。因此，结果表明纹外皮层的反应可能与视觉空间中物体的形状有关。
