AI Article Synopsis
- The corpus callosum connects the two cerebral hemispheres and is essential for communication between them.
- Evolutionary changes have led to a larger brain size with less interhemispheric connectivity, promoting intrahemispheric processing instead.
- Research indicates that the speed of signal transfer across the corpus callosum may limit communication in larger brains, influencing brain lateralization and functioning.
Article Abstract
The corpus callosum is the largest commissure in the brain and acts as a "bridge" of nerve fibres connecting the two cerebral hemispheres. It plays a crucial role in interhemispheric integration and is responsible for normal communication and cooperation between the two hemispheres. Evolutionary pressures guiding brain size are accompanied by reduced interhemispheric and enhanced intrahemispheric connectivity. Some lines of evidence suggest that the speed of transcallosal conduction is limited in large brains (e.g., in humans), thus favouring intrahemispheric processing and brain lateralisation. Patterns of directional symmetry/asymmetry of transcallosal transfer time may be related to the degree of brain lateralisation. Neural network modelling and electrophysiological studies on interhemispheric transmission provide data supporting this supposition.
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| http://dx.doi.org/10.1080/13576500903154231 | DOI Listing |
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