Proportional anterior commissure area in humans and monkeys

Brett T. Foxman; Jeffrey Oppenheim; Carol K. Petito; Michael S. Gazzaniga

doi:10.1212/wnl.36.11.1513

Proportional anterior commissure area in humans and monkeys

Brett T. Foxman, Jeffrey Oppenheim, Carol K. Petito, Michael S. Gazzaniga

Pathology

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Behavioral testing following division of the corpus callosum has shown that the anterior commissure can transfer information related to visual tasks interhemispherically in nonhuman primates but not in humans. We have found that the ratio of anterior commissure cross-sectional area to total neocortical commissural area is significantly greater for rhesus monkeys than for humans. This difference persists when the proportions are weighted for these structures' known differences in axon density. We hypothesize that this interspecies dissimilarity reflects a difference in the distribution of interhemispheric communication and may explain the behavioral differences observed after callosal section.

Original language	English (US)
Pages (from-to)	1513-1517
Number of pages	5
Journal	Neurology
Volume	36
Issue number	11
DOIs	https://doi.org/10.1212/wnl.36.11.1513
State	Published - Nov 1986

ASJC Scopus subject areas

Clinical Neurology

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author = "Foxman, {Brett T.} and Jeffrey Oppenheim and Petito, {Carol K.} and Gazzaniga, {Michael S.}",

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AU - Oppenheim, Jeffrey

AU - Petito, Carol K.

AU - Gazzaniga, Michael S.

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Y1 - 1986/11

N2 - Behavioral testing following division of the corpus callosum has shown that the anterior commissure can transfer information related to visual tasks interhemispherically in nonhuman primates but not in humans. We have found that the ratio of anterior commissure cross-sectional area to total neocortical commissural area is significantly greater for rhesus monkeys than for humans. This difference persists when the proportions are weighted for these structures' known differences in axon density. We hypothesize that this interspecies dissimilarity reflects a difference in the distribution of interhemispheric communication and may explain the behavioral differences observed after callosal section.

AB - Behavioral testing following division of the corpus callosum has shown that the anterior commissure can transfer information related to visual tasks interhemispherically in nonhuman primates but not in humans. We have found that the ratio of anterior commissure cross-sectional area to total neocortical commissural area is significantly greater for rhesus monkeys than for humans. This difference persists when the proportions are weighted for these structures' known differences in axon density. We hypothesize that this interspecies dissimilarity reflects a difference in the distribution of interhemispheric communication and may explain the behavioral differences observed after callosal section.

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Proportional anterior commissure area in humans and monkeys

Abstract

ASJC Scopus subject areas

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