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

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

2003-10-14

arxiv.org/abs/q-bio/0310015v1

Journal of Computational Neuroscience 15, 347-356 (2003)

Biology

Quantitative Biology

Neurons and Cognition

brain, theoretical neuroanatomy, computational neuroanatomy, cortical areas, scaling, connectivity

Scientific paper

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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