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555253.0 [No comment] 24.03.2011 14:49 Released

ID: 555253.0, MPI für Psycholinguistik / Yearbook 2011
Cortical brain regions associated with color processing: An FMRI study
Authors:Bramão, Inêz; Faísca, Luís; Forkstam, Christian; Reis, Alexandra; Petersson, Karl Magnus
Date of Publication (YYYY-MM-DD):2010
Title of Journal:The Open Neuroimaging Journal
Start Page:164
End Page:173
Review Status:Peer-review
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:To clarify whether the neural pathways concerning color processing are the same for natural objects, for artifacts objects and for non-sense objects we examined functional magnetic resonance imaging (FMRI) responses during a covert naming task including the factors color (color vs. black&white (B&W)) and stimulus type (natural vs. artifacts vs. non-sense objects). Our results indicate that the superior parietal lobule and precuneus (BA 7) bilaterally, the right hippocampus and the right fusifom gyrus (V4) make part of a network responsible for color processing both for natural and artifacts objects, but not for non-sense objects. The recognition of non-sense colored objects compared to the recognition of color objects activated the posterior cingulate/precuneus (BA 7/23/31), suggesting that color attribute induces the mental operation of trying to associate a non-sense composition with a familiar objects. When color objects (both natural and artifacts) were contrasted with color nonobjects we observed activations in the right parahippocampal gyrus (BA 35/36), the superior parietal lobule (BA 7) bilaterally, the left inferior middle temporal region (BA 20/21) and the inferior and superior frontal regions (BA 10/11/47). These additional activations suggest that colored objects recruit brain regions that are related to visual semantic information/retrieval and brain regions related to visuo-spatial processing. Overall, the results suggest that color information is an attribute that improve object recognition (based on behavioral results) and activate a specific neural network related to visual semantic information that is more extensive than for B&W objects during object recognition
Free Keywords:FMRI; Color Information and Processing; Naming; Natural Objects; Artifacts Objects; Non-Objects
External Publication Status:published
Document Type:Article
Communicated by:Karin Kastens
Affiliations:MPI für Psycholinguistik
External Affiliations:External Organizations