It is known that the white matter of neocortex increases disproportionately with brain size. However, relatively few measurements have been made of white matter/gray matter scaling in the cerebellum. We present data on the volumes of white and gray matter in both structures, taken from 45 species of mammals. We find a scaling exponent of 1.13 for cerebellum and 1.28 for neocortex. The 95% confidence intervals for our estimates of these two exponents do not overlap. This difference likely reflects differences in the connectivity and/or micro-structure of white matter in the two regions.
Dr. Eliot C. Bush
Biology Division, California Institute of Technology
Pasadena, CA 91125 (USA)
Tel. +1 626 395 4819, Fax +1 626 449 0679, E-Mail firstname.lastname@example.org
Received: October 3, 2002
Returned for revision: November 1, 2002
Accepted after revision: November 26, 2002
Number of Print Pages : 5
Number of Figures : 2, Number of Tables : 2, Number of References : 20
Brain, Behavior and Evolution
Founded 1968 and continued 1968–1986 by W. Riss, New York, N.Y.
Official Organ of the J.B. Johnston Club
Vol. 61, No. 1, Year 2003 (Cover Date: 2003)
Journal Editor: Walter Wilczynski, Austin, Tex.
ISSN: 0006–8977 (print), 1421–9743 (Online)
For additional information: http://www.karger.com/journals/bbe
Article / Publication Details
Published online: 3/13/2003
Issue release date: February 2003
Number of Print Pages: 5
Number of Figures: 2
Number of Tables: 2
ISSN: 0006-8977 (Print)
eISSN: 1421-9743 (Online)
For additional information: http://www.karger.com/BBE
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