ISSN:
1432-1106
Keywords:
Pyramidal tract neurons
;
Axon branching
;
Spinal cord
;
Monkey
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary The branching pattern of individual pyramidal tract (PT) neurons of the monkey motor cortex was studied by activating these neurons antidromically from within the cervical motor nuclei and also from other regions of the spinal cord. 1. Fifty-four neurons were activated from motor nuclei in the cervical cord. Twenty-eight of these were activated from one segment and six (11%) were activated from motor nuclei of different segments. The remaining 20 neurons were activated from motor nuclei and also from unspecified region(s) of the gray matter. 2. Another 156 neurons were activated from unspecified region(s) of cervical gray matter which could have been motor nuclei or outside the nuclei, and 64 of these were activated from more than one segment. 3. The branching patterns of PT neurons sending axons directly to motor nuclei innervating distal forelimb muscles suggested that they branch less than the rest of PT neurons.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00238341
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