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THE JOURNAL OF COMPARATIVE NEUROLOGY 288:474-492 (1989) PrimateSpinothalamic Pathways:II. The
 

Summary: THE JOURNAL OF COMPARATIVE NEUROLOGY 288:474-492 (1989)
PrimateSpinothalamic Pathways:II. The
Cells of Origin of the Dorsolateraland
VentralSpinothalamic Pathways
A. VANIA APKARIAN AND CHARLESJ. HODGE
Neurosurgery Department, SUNY Health Science Center, Syracuse, New York 13210
ABSTRACT
The cells of origin of the dorsolateral (DSTT) and the ventral (VSTT)
spinothalamic tracts were studied in 11 monkeys. The spinothalamic tract
cells were retrogradely labeled by horseradish peroxidase (HRP) injected in
the thalamus. All animals also received a midthoracic spinal cord lesion on the
side ipsilateral to the thalamic injections.
The distribution of labeled cells found in these animals throughout the
cervical segments was similar to animals with no spinal cord lesions. Five ani-
mals had ventral quadrant lesions to demonstrate the cells of origin of the
DSTT. In macaques with complete ventral quadrant lesions, more than 80%#
of the HRP label in the contralateral L4-L7 segments was located in lamina I,
while in squirrel monkeys, the label in the contralateral lower lumbar region
was distributed between laminae 1-111 and IV-VI. Few labeled cells were
found in laminae VII-X.

  

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

 

Collections: Biology and Medicine