How does connectivity between cortical areas depend on brain size? Implications for efficient computation.

Jan Karbowski

doi:10.1023/a:1027467911225

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How does connectivity between cortical areas depend on brain size? Implications for efficient computation.

Jan Karbowski

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Abstract

A formula for an average connectivity between cortical areas in mammals is derived. Based on comparative neuroanatomical data, it is found, surprisingly, that this connectivity is either only weakly dependent or independent of brain size. It is discussed how this formula can be used to estimate the average length of axons in white matter. Other allometric relations, such as cortical patches and area sizes vs. brain size, are also provided. Finally, some functional implications, with an emphasis on efficient cortical computation, are discussed as well.

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Animals Axons Brain Cell Count Cerebral Cortex Humans Models, Biological Neural Pathways Neurons Organ Size Synapses Comparative Study Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.

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Jan Karbowski. How does connectivity between cortical areas depend on brain size? Implications for efficient computation.. https://doi.org/10.1023/a%3A1027467911225

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