Wheel running behavior is impaired by both surgical section and genetic absence of the mouse corpus callosum

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Douglas Wahlsten, Visiting Professor (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site: http://library.uncg.edu/

Abstract: Mice lacking a corpus callosum (CC) often show little or no deficit on tests of behavior. This paper reports that on highly complex bimanual motor tasks, deficits can be found. The speed of running on a wheel with irregularly spaced rungs is reduced by both hereditary absence of the CC in 129 × BALB/c recombinant mice and surgical section of the CC in genetically normal B6D2F2 mice. The effect of CC absence appears on measures most closely related to speed, no influence exists on the amount of running over a period of 5 days. Motor behavior on a notched balance beam, on the other hand, shows clear superiority of the hybrid mice but no relation with reduced size of the CC, whether it was produced by genotype or surgery. The effect of absent CC is task dependent, but it is not obscured by developmental compensation in the recombinant mice.

Additional Information

Brain Research Bulletin, 57: 27-33.
Language: English
Date: 2002
Recombinant inbred strains, Hippocampal commissure, Balance beam, Motor coordination, Task difficulty

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