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J Neurophysiol (January 1, 2003). 10.1152/jn.00626.2002
Submitted on Submitted 20 August 2002; accepted in final form 3 September 2002
REPORT
1Pittsburgh Veterans Affairs Medical Center, 2Center for the Neural Basis of Cognition, and Departments of Neurobiology, 3Psychiatry and Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
Dum, Richard P. and
Peter L. Strick.
An Unfolded Map of the Cerebellar Dentate Nucleus and its
Projections to the Cerebral Cortex. J. Neurophysiol. 89: 634-639, 2003. We have used retrograde transneuronal
transport of neurotropic viruses to examine the organization of the
projections from the dentate nucleus of the cerebellum to "motor"
and "nonmotor" areas of the cerebral cortex. To perform this
analysis we created an unfolded map of the dentate. Plotting the
results from current and prior experiments on this unfolded map
revealed important features about the topography of function in the
dentate. We found that the projections to the primary motor and
premotor areas of the cerebral cortex originated from dorsal portions
of the dentate. In contrast, projections to prefrontal and posterior
parietal areas of cortex originated from ventral portions of the
dentate. Thus the dentate contains anatomically separate and
functionally distinct motor and nonmotor domains.
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