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The Journal of Neuroscience. November 1994, 14(11): 6779-9795 Squirrel Monkey Lateral Thalamus. I. Somatic Nociresponsive
 

Summary: The Journal of Neuroscience. November 1994, 14(11): 6779-9795
Squirrel Monkey Lateral Thalamus. I. Somatic Nociresponsive
Neurons and Their Relation to Spinothalamic Terminals
A. Vania Apkarian and Ting Shi
Department of Neurosurgery, Computational Neuroscience Program, SUNY Health Science Center, Syracuse, New York
13210
The incidence and response properties of nociresponsive
neurons, their locations relative to spinothalamic terminals,
and their relations to cytoarchitectonic borders were studied
in the lateral thalamus of the squirrel monkey. Nociceptive
neurons were found in ventral posterior inferior nucleus (VPI),
in the lateral and medial nuclei (VPL and VPM) of the ventral
posterior complex (VP = VPL + VPM), as well as the posterior
complex (PO). The overall incidence of nociresponsive cells
was 19% (50 of 270 cells). The proportion of nociresponsive
neurons within VPI was 50% (23 of 46), 38% in PO (8 of 21),
and 10% in VP (19 of 203). Most nociresponsive cells (90%)
in VP were of wide-dynamic-range type, while within VPI
43% of nociresponsive cells were nociceptive-specific type.
Most of these nociresponsive cells had thermal and me-

  

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

 

Collections: Biology and Medicine