INDEPENDENT NEURAL MECHANISMS FOR BRIGHT AND DARK INFORMATION IN BINOCULAR STEREOPSIS
INDEPENDENT NEURAL MECHANISMS FOR BRIGHT AND DARK INFORMATION IN BINOCULAR STEREOPSIS
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DOI：
10.1038/374808a0
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发表时间：
1995-04-27
期刊：
影响因子：
64.8
通讯作者：
PARKER, AJ
中科院分区：
文献类型：
--
作者：
HARRIS, JM;PARKER, AJ
早期的视觉处理被组织成许多独立的通道。在视网膜中，亮度的增加和减少是由不同的神经元群独立处理的。对于人类视觉的心理物理测量，独立性可以用统计学方法检验。在深度判断任务中使用这个标准，我们在这里表明，对于双目立体视觉，亮度的增加和减少是独立处理的，至少达到来自左眼和右眼的信息首先被组合的水平。在立体处理的稍后阶段，来自两个通道的信息不再是独立的，因为立体视觉的信号首先在视觉皮层结合，这些结果表明神经的“开”和“关”通道在早期皮层阶段保持独立，立体视觉的理论研究已经提出，两只眼睛的视图中的视觉特征是在“相似性”的基础上匹配的（2）。我们的研究结果表明，立体匹配处理的功能作为统计独立（因此不相似），如果他们出现感知明亮和黑暗相对于背景，如果功能不同的感知，但只有在亮度或黑暗的程度，人类立体视觉对待他们相似。
EARLY visual processing is organized into a number of independent channels. In the retina, increments and decrements of brightness are processed independently by different groups of neurons', For psychophysical measurements of human vision, independence can be tested statistically, Using this criterion in a depth judgement task, we show here that, for binocular stereo vision, increments and decrements are treated independently, at least as far as the level at which information from the left and right eyes is first combined, At later stages of stereo processing, the information from the two channels is no longer independent, Because the signals for stereo vision are first combined at the visual cortex, these results suggest that the neural 'on' and 'off' channels remain independent right up to early cortical stages, Theoretical studies of stereo vision have proposed that visual features in the views of the two eyes are matched on the basis of 'similarity'(2). Our results show that stereo matching treats features as statistically independent (and therefore dissimilar) if they appear perceptually bright and dark relative to the background, If features differ perceptually but only in the degree of brightness or darkness, human stereo vision treats them as similar.