213 80 80 3 3 A. John MacLennan Robert C. Drugan Steven F. Maier Department of Psychology University of Colorado Campus Box 345 80309 Boulder CO USA Abstract An ‘opioid’ form of analgesia (‘long-term analgesia’) was completely blocked by scopolamine. This effect of a muscarinic antagonist suggests that muscarinic cholinergic processes may play an important role in this analgesia and in other types of endogenous pain control.
Psychopharmacology – Springer Journals
Published: Jun 1, 1983
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