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JOURNALOFNEUROPHYSIOLOGY Vol. 64, No. 5, November 1990. Printed in U.S.A.
 

Summary: JOURNALOFNEUROPHYSIOLOGY
Vol. 64, No. 5, November 1990. Printed in U.S.A.
Ventrolateral and Dorsolateral Ascending Spinal Cord
Pathway Influence on Thalamic Nociception in Cat
ROBERT J. MARTIN, A. VANIA APKARIAN, AND CHARLES J. HODGE, JR.
Department of Neurosurgery, State University ofNew York Health Science Center at Syrucuse, Syracuse, New York 13210
SUMMARY AND CONCLUSIONS INTRODUCTION
1. In cat there are two portions of the spinothalamic tract
w-n -a ventral component, the ventral spinothalamic tract
(VSTT) made up of axons of cells of spinal cord laminae IV-X,
and a dorsolateral component, the dorsolateral spinothalamic
tract (DSTT) made up of axons of cells in lamina I of the spinal
cord dorsal horn. This study was designed to evaluate thalamic
neuronal responses to cutaneous noxious thermal stimuli and to
determine the functional importance of pathways ascending in
the ventral and dorsolateral portionsof thespinalcord,ipsilateral
to the thalamic recordingsiteand contralateralto the hindlimb
stimulationregion,for transmissionof nociceptiveinformation to
thethalamus.
2. Extracellular single-unit recordingswere made from 45

  

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

 

Collections: Biology and Medicine