光栅斑块的总和表明在一个视网膜位置存在多种类型的探测器。

Summation of grating patches indicates many types of detector at one retinal location.

作者信息

Watson A B

出版信息

Vision Res. 1982;22(1):17-25. doi: 10.1016/0042-6989(82)90162-6.

Abstract

Summation between small, superimposed, fixed patches of sinusoidal grating of various spatial frequencies is explained by detectors with bandwidths of less than one octave. The smoothness of the local contrast sensitivity function indicates that detectors cannot be separated in frequency by more than one bandwidth. Together, these results suggest that the fovea is served by at least seven different frequency-selective detectors.

摘要

由带宽小于一个八度的探测器可以解释不同空间频率的小的、叠加的、固定正弦光栅斑块之间的总和。局部对比敏感度函数的平滑性表明探测器在频率上的分离不能超过一个带宽。这些结果共同表明，中央凹至少由七种不同的频率选择性探测器提供服务。