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Cerebral Cortex 1995; 5:301-306
© Oxford University Press 1995

Feature Article

Whisker Follicle Removal Affects Somatotopy and Innervation of Other Follicles in Adult Mice

Peter Melzer and Carolyn B. Smith

Laboratory of Cerebral Metabolism, National Institute of Mental Health Bethesda, Maryland 20892

Correspondence should be addressed to C. B. Smith, Laboratory of Cerebral Metabolism, National Institute of Mental Health, Building 36, Room 1A05, 9000 Rockville Pike, Bcthesda, MD 20892

The present study shows that in the whisker-to-barrel pathway of adult mice surgical removal of three whisker follicles leads to the expansion of the functional cortical representation of the whiskers adjacent to the lesion into the deprived barrels within 8 months. Concomitant with this enlargement there is an increase in follicular innervation of the corresponding whiskers. This reorganization of the peripheral innervation may be important for the observed reshaping of cortical somatotopy.


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