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Published November 2003 | public
Journal Article

How Does Connectivity Between Cortical Areas Depend on Brain Size? Implications for Efficient Computation

Karbowski, Jan

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.

Additional Information

© 2003 Kluwer Academic Publishers. Received March 10, 2003; Revised June 7, 2003; Accepted July 9, 2003. The author thanks Dr. Almut Schüz for data on projection experiments in mouse and monkey, Bard Ermentrout, and an anonymous Reviewer for editorial comments on the manuscript. The work was supported by NSF grant DMS 9972913, and by the Sloan-Swartz fellowship at Caltech.

Additional details

Created:
August 22, 2023
Modified:
October 18, 2023