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Color Architecture in Alert Macaque Cortex Revealed by fMRI

Conway, Bevil R. and Tsao, Doris Y. (2006) Color Architecture in Alert Macaque Cortex Revealed by fMRI. Cerebral Cortex, 16 (11). pp. 1604-1613. ISSN 1460-2199.

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The contribution that different brain areas make to primate color vision, especially in the macaque, is debated. Here we used functional magnetic resonance imaging in the alert macaque, giving a whole brain perspective of color processing in the healthy brain. We identified color-biased and luminance-biased activity and color-afterimage activity. Color-biased activity was found in V1, V2, and parts of V4 and not in V3a, MT, or other dorsal stream areas, in which a luminance bias predominated. Color-biased activity and color-afterimage activity were also found in a region on the posterior bank of the superior temporal sulcus. We review anatomical and physiological studies that describe this region, PITd, and postulate that it is distinct from areas V4 and TEO. When taken together with single-unit studies and lesion studies, our results suggest that color depends on a connected ventral-stream pathway involving at least V1, V2, V4, and PITd.

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Tsao, Doris Y.0000-0003-1083-1919
Additional Information:© 2005 The Author. Published by Oxford University Press. Published: 28 December 2005. Both authors contributed equally to this work.
Errata:The authors would like to acknowledge the support of Grant EY 16187 (Margaret S. Livingstone) and regret that this was not included in the original article.
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Subject Keywords:color; macaca; afterimage; functional magnetic resonance imaging
Issue or Number:11
Record Number:CaltechAUTHORS:20200121-084551063
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Official Citation:Bevil R. Conway, Doris Y. Tsao, Color Architecture in Alert Macaque Cortex Revealed by fMRI, Cerebral Cortex, Volume 16, Issue 11, November 2006, Pages 1604–1613,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100809
Deposited By: Tony Diaz
Deposited On:21 Jan 2020 16:57
Last Modified:27 Apr 2021 19:37

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