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Biol Res. 2003;36(1):89-99.

Long distance communication in the human brain: timing constraints for inter-hemispheric synchrony and the origin of brain lateralization.

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1
Departamento de Psiquiatría, Facultad de Medicina, Pontificia Universidad Católica de Chile. Marcoleta No. 387, 2o Piso, P.O. Box 114-D, Santiago 1, Chile. faboitiz@puc.cl

Abstract

Analysis of corpus callosum fiber composition reveals that inter-hemispheric transmission time may put constraints on the development of inter-hemispheric synchronic ensembles, especially in species with large brains like humans. In order to overcome this limitation, a subset of large-diameter callosal fibers are specialized for fast inter-hemispheric transmission, particularly in large-brained species. Nevertheless, the constraints on fast inter-hemispheric communication in large-brained species can somehow contribute to the development of ipsilateral, intrahemispheric networks, which might promote the development of brain lateralization.

PMID:
12795208
[Indexed for MEDLINE]
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