Hierarchical Representation for Chromatic Processing across Macaque V1, V2, and V4

Liu, Y., Li, M., Zhang, X., Lu, Y., Gong, H., Yin, J., Chen, Z., Qian, L., Yang, Y., Andolina, I. M., Shipp, S., McLoughlin, N., Tang, S., Wang, W. (August 2020) Hierarchical Representation for Chromatic Processing across Macaque V1, V2, and V4. Neuron, 108 (3). pp. 538-550. ISSN 0896-6273

URL: https://pubmed.ncbi.nlm.nih.gov/32853551/
DOI: 10.1016/j.neuron.2020.07.037

Abstract

The perception of color is an internal label for the inferred spectral reflectance of visible surfaces. To study how spectral representation is transformed through modular subsystems of successive cortical areas, we undertook simultaneous optical imaging of intrinsic signals in macaque V1, V2, and V4, supplemented by higher-resolution electrophysiology and two-photon imaging in awake macaques. We find a progressive evolution in the scale and precision of chromotopic maps, expressed by a uniform blob-like architecture of hue responses within each area. Two-photon imaging reveals enhanced hue-specific cell clustering in V2 compared with V1. A phenomenon of endspectral (red and blue) responses that is clear in V1, recedes in V2, and is virtually absent in V4. The increase in mid- and extra-spectral hue representations through V2 and V4 reflects the nature of hierarchical processing as higher areas read out locations in chromatic space from progressive integration of signals relayed by V1.

Item Type: Paper
Additional Information: 1097-4199 Liu, Ye Li, Ming Zhang, Xian Lu, Yiliang Gong, Hongliang Yin, Jiapeng Chen, Zheyuan Qian, Liling Yang, Yupeng Andolina, Ian Max Shipp, Stewart Mcloughlin, Niall Tang, Shiming Wang, Wei Journal Article United States Neuron. 2020 Aug 19:S0896-6273(20)30581-X. doi: 10.1016/j.neuron.2020.07.037.
Uncontrolled Keywords: 2-photon calcium imaging V1 V2 V4 color perception cortical hue representation intrinsic-signal optical imaging macaque visual cortex
CSHL Authors:
Communities: CSHL labs > Li lab
Depositing User: Matthew Dunn
Date: 19 August 2020
Date Deposited: 14 Dec 2020 17:02
Last Modified: 14 Dec 2020 17:02
Related URLs:
URI: https://repository.cshl.edu/id/eprint/39675

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