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A Case Report and Review of the Literature

Roger P. Woods, MD

Arch Neurol. 1986;43(10):1083-1084.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

It is well known that the brain is an asymmetric organ and that the direction of brain asymmetries in humans is consistent throughout most of the population. Most individuals are right-handed with left hemisphere dominance for speech, and postmortem¹ and radiologic² studies have suggested an anatomic basis for such asymmetries. A number of theories have been proposed in recent years to explain the biologic origin of brain asymmetries and why certain individuals deviate from the expected pattern.^3-8

The relationship postulated between brain asymmetries and other asymmetries found in the human body is a major point of difference among these theories. Corballis and Morgan have proposed that both visceral and brain asymmetries are the result of a single embryologic leftright gradient found in the developing oocyte.^3,4 In contrast, Annett⁵ has proposed that brain asymmetries and asymmetries of the other internal organs are inherited independently. These . . . [Full Text PDF of this Article]

Author Affiliations
From the Department of Medicine, University of Washington, Seattle.

Footnotes
Accepted for publication May 19, 1986.

Reprint requests to Department of Medicine, RG 20, University of Washington, Seattle, WA 98195 (Dr Woods).

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