Georgeson M A
Philos Trans R Soc Lond B Biol Sci. 1980 Jul 8;290(1038):11-22. doi: 10.1098/rstb.1980.0079.
The existence of multiple channels, or multiple receptive field sizes, in the visual system does not commit us to any particular theory of spatial encoding in vision. However, distortions of apparent spatial frequency and width in a wide variety of conditions favour the idea that each channel carries a width- or frequency-related code or 'label' rather than a 'local sign' or positional label. When distortions of spatial frequency occur without prior adaptation (e.g. at low contrast or low luminance) they are associated with lowered sensitivity, and may be due to a mismatch between the perceptual labels and the actual tuning of the channels. A low-level representation of retinal space could be constructed from the spatial information encoded by the channels, rather than being projected intact from the retina.
视觉系统中存在多个通道或多种感受野大小，这并不使我们局限于任何特定的视觉空间编码理论。然而，在多种条件下视空间频率和宽度的扭曲支持这样一种观点，即每个通道携带与宽度或频率相关的编码或“标签”，而不是“局部标志”或位置标签。当空间频率的扭曲在没有预先适应的情况下发生时（例如在低对比度或低亮度下），它们与敏感度降低有关，并且可能是由于感知标签与通道的实际调谐之间的不匹配。视网膜空间的低层次表征可以由通道编码的空间信息构建而成，而不是从视网膜完整投射而来。
