Roleofchro maticinformationcontributing totheperceptionofmotion

众所周知，有两种不同的通路，它们具有不同的生理和解剖功能，独立地将各自的颜色和亮度信息传递到视觉皮质的后期阶段。对于这两条通路的以往研究，在心理物理和生理结果之间一直存在争议，为了解决这个问题，我们用心理物理和脑功能成像的方法研究了这两条通路的时空特性。我们发现这两种方法的结果没有质的差异。这表明，心理物理学中的群体编码结果与生理学中多个单细胞反应的统计分析结果之间的差异可能是引起争议的原因。

It has been known that there are two different pathways, which have differentphysiological and anatomical functions, independently conveying respective color andluminance informations to the latter stages of the visual cortex. As to previous studiesof these two pathways, there has been the controversy between psychophysical andphysiological results.To challenge to solve this issue, we investigated spatiotemporal properties of thesepathways with the psychophysical and brain functional imaging approaches. We found noqualitative difference between results of these two approaches. This indicates that a difference between the results of the population coding in thepsychophysics, and the results of statistic analysis based on responses from many singlecells in the physiology may have caused the controversy.