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Cortical brain regions associated with color processing: An FMRI study

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Forkstam,  Christian
Technical Group, MPI for Psycholinguistics, Max Planck Society;
Cognitive Neurophysiology Research Group, Stockholm Brain Institute, Karolinska Institutet, Stockholm, Sweden;
Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroimaging, Radboud Universiteit Nijmegen, the Netherlands;

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Petersson,  Karl Magnus
Neurobiology of Language Group, MPI for Psycholinguistics, Max Planck Society;
Cognitive Neuroscience Research Group, Deparmento de Psicologia, Faculdade de Ciências Humanas e Sociais, & Institute of Biotechnology & Bioengineering/CBME, Universidade do Algarve, Faro, Portugal;
Cognitive Neurophysiology Research Group, Stockholm Brain Institute, Karolinska Institutet, Stockholm, Sweden;
Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroimaging, Radboud Universiteit Nijmegen, the Netherlands;

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Bramao-TONIJ10.pdf
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Citation

Bramão, I., Faísca, L., Forkstam, C., Reis, A., & Petersson, K. M. (2010). Cortical brain regions associated with color processing: An FMRI study. The Open Neuroimaging Journal, 4, 164-173. doi:10.2174/1874440001004010164.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-3CDF-7
Abstract
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