Perceptual hue, lightness, and chroma are represented in a multidimensional functional anatomical map in macaque V1.

Perceptual hue, lightness, and chroma are represented in a multidimensional functional anatomical map in macaque V1.
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猕猴 V1 的感知色调、亮度和色度以多维功能解剖图表示

DOI:
10.1016/j.pneurobio.2022.102251
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发表时间:
2022-05
影响因子:
6.7
通讯作者:
Tang, Shiming
Tang, Shiming
中科院分区:
医学2区
文献类型:
--
作者:
Li, Ming;Ju, Niansheng;Jiang, Rundong;Liu, Fang;Jiang, Hongfei;Macknik, Stephen;Martinez-Conde, Susana;Tang, Shiming

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人类沿着色彩空间的三个维度感知数百万种颜色:色调、亮度和色度。知识上的一个主要差距是大脑在皮层中代表这些特定维度的位置,以及它们之间的相互关系。先前的研究表明,大脑区域 V4 和后颞下皮层 (PIT) 是计算颜色维度的核心。为了确定 V1 对建立这些下游处理机制的贡献,我们研究了猕猴的皮质颜色反应——它们与人类共享色觉机制。我们在介观和微观尺度上使用双光子钙成像,发现色调和亮度在皮质图上呈正交方向排列,色度由神经元反应的强度表示,如之前在 PIT 中所示。这些发现表明,视觉的最早皮质阶段决定了人类颜色感知的三个主要维度。
Humans perceive millions of colors along three dimensions of color space: hue, lightness, and chroma. A major gap in knowledge is where the brain represents these specific dimensions in cortex, and how they relate to each other. Previous studies have shown that brain areas V4 and the posterior inferotemporal cortex (PIT) are central to computing color dimensions. To determine the contribution of V1 to setting up these downstream processing mechanisms, we studied cortical color responses in macaques—who share color vision mechanisms with humans. We used two-photon calcium imaging at both meso- and micro-scales and found that hue and lightness are laid out in orthogonal directions on the cortical map, with chroma represented by the strength of neuronal responses, as previously shown in PIT. These findings suggest that the earliest cortical stages of vision determine the three primary dimensions of human color perception.
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发表时间: 2016-05-05
期刊: Nature
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