Journal of Applied Physiology
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J Appl Physiol 71: 638-643, 1991;
8750-7587/91 $5.00
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Journal of Applied Physiology, Vol 71, Issue 2 638-643, Copyright © 1991 by American Physiological Society

ARTICLES

Pressure-induced striatal dopamine release correlates hyperlocomotor activity in rats exposed to high pressure

J. H. Abraini and J. C. Rostain
Laboratoire de Biologie des Hautes Pressions, Faculte de Medecine Nord, Centre National de la Recherche Scientifique, Unite de Recherche Associee-1330, Marseille, France.

Free-moving rats chronically implanted in the striatum with multifiber carbon electrodes selective to dopamine were compressed in a helium-oxygen mixture to 80 bars. Extracellular dopamine level and behavioral symptoms of high-pressure neurological syndrome were simultaneously recorded. Under these conditions, the extracellular level of dopamine monitored by differential pulse voltammetry was found to be pressure dependent, and hyperlocomotor activity, a behavioral symptom of high-pressure neurological syndrome, was found to be linked to these pressure-induced changes in dopamine release.


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