Psychology Publications

Title

A Common Neural Substrate for Perceiving and Knowing About Color

Document Type

Article

Publication Date

2007

Journal

Neuropsychologia

Volume

45

Issue

12

First Page

2802

Last Page

2810

URL with Digital Object Identifier

https://doi.org/10.1016/j.neuropsychologia.2007.05.002

Abstract

Functional neuroimaging research has demonstrated that retrieving information about object-associated colors activates the left fusiform gyrus in posterior temporal cortex. Although regions near the fusiform have previously been implicated in color perception, it remains unclear whether color knowledge retrieval actually activates the color perception system. Evidence to this effect would be particularly strong if color perception cortex was activated by color knowledge retrieval triggered strictly with linguistic stimuli. To address this question, subjects performed two tasks while undergoing fMRI. First, subjects performed a property verification task using only words to assess conceptual knowledge. On each trial, subjects verified whether a named color or motor property was true of a named object (e.g., TAXI-yellow, HAIR-combed). Next, subjects performed a color perception task. A region of the left fusiform gyrus that was highly responsive during color perception also showed greater activity for retrieving color than motor property knowledge. These data provide the first evidence for a direct overlap in the neural bases of color perception and stored information about object-associated color, and they significantly add to accumulating evidence that conceptual knowledge is grounded in the brain’s modality-specific systems.

Notes

This article was initially published by Elsevier in Neuropsychologia. The final published version is available at: https://doi.org/10.1016/j.neuropsychologia.2007.05.002

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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