| The brain as the engine of sex differences in the organization of movement in rats. | |
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MedLine Citation:
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PMID: 18074218 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sex differences in the kinematic organization of non-reproductive behavior are often relegated to byproducts of sex differences in body morphology. We review evidence showing not only that male and female rats organize their posture and stepping differently during a variety of actions, but that these differences arise from sex differences in the organization of movement in the central nervous system (CNS). Indeed, the expression and choice of sex-typical patterns of movement can be altered by CNS injury. The pattern of hormonal regulation of these sex differences is also not organized as commonly held theory would predict. As expected, males castrated shortly after birth are female-typical in their motor organization. Females ovariectomized at birth, however, are male-typical in their patterns of movement. Thus, female-typical patterns of movement organization are not the default form, but rather are dependent on the effects of gonadal steroids to feminize the developing CNS. The implications of these findings are discussed with regards to our understanding of the evolution of sex differences in CNS anatomy and behavior both for animals and humans. |
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Authors:
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Evelyn F Field; Sergio M Pellis |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Archives of sexual behavior Volume: 37 ISSN: 0004-0002 ISO Abbreviation: Arch Sex Behav Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-23 Completed Date: 2008-06-18 Revised Date: 2008-07-15 |
Medline Journal Info:
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Nlm Unique ID: 1273516 Medline TA: Arch Sex Behav Country: United States |
Other Details:
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Languages: eng Pagination: 30-42 Citation Subset: IM |
Affiliation:
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Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada. efield@ucalgary.ca |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Agonistic Behavior
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physiology Animals Appetitive Behavior / physiology Biomechanics Brain / physiology* Exploratory Behavior / physiology Female Gonadal Steroid Hormones / physiology* Kinesthesis / physiology* Male Motor Activity / physiology* Orientation Play and Playthings* Posture / physiology Proprioception / physiology Psychomotor Performance / physiology Rats Sex Characteristics* |
| Chemical | |
Reg. No./Substance:
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0/Gonadal Steroid Hormones |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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