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THE JOURNAL OF COMPARATIVE NEUROLOGY 365~640-658(1996) Direct Spinal Projectionsto Limbic and
 

Summary: THE JOURNAL OF COMPARATIVE NEUROLOGY 365~640-658(1996)
Direct Spinal Projectionsto Limbic and
Striatal Areas: Anterograde Transport
Studies From the Upper Cervical Spinal
Cord and the Cervical Enlargement in
Squirrel Monkey and Rat
HEIKE 31. NEWMAN, RICHARD T. STEVENS, AND A. VASIA APKARIAN
Department of Neurosurgery, State University of New York Health Science Center,
Syracuse, New York 13210
ABSTRACT
With the anterograde tracers Phaseolus vulgaris-leucoagglutinin(PHA-L) and biotinyl-
ated dextranamine (BD),direct spinal connections from the upper cervical spinal cord (UC;C1
and C2) and the cervical enlargement (CE; C5-Tl) were demonstrated in various striatal and
limbic nuclei in both squirrel monkey and rat. Within each species and from each spinal level,
the total number of terminals seen in the limbic and striatalareaswas approximately 60-80%of
the number seen within the thalamus. Labeled terminal structures were seen in the
hypothalamic nuclei, ventral striatum, globus pallidus, amygdala, preoptic area, and septa1
nuclei. In both species,the number of labeled terminals in limbic and striatalregions was larger
from UC than from CE, although the distributions to each nucleus varied with the specific
lamina injected. In both species and from both UC and CE, approximately one-half of the

  

Source: Apkarian, A. Vania - Department of Physiology, Northwestern University

 

Collections: Biology and Medicine