RT Journal Article SR Electronic T1 THE ACTION OF MORPHINE, METHADONE, MEPERIDINE AND NALORPHINE ON DORSAL ROOT POTENTIALS OF CAT SPINAL CORD JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 210 OP 213 VO 134 IS 2 A1 KRIVOY, WILLIAM A. A1 HUGGINS, R. A. YR 1961 UL http://jpet.aspetjournals.org/content/134/2/210.abstract AB By studying the dorsal root potentials of cat spinal cord it was found that morphine, methadone, meperidine and nalorphine inhibit the residual negativity which constitutes the fifth dorsal root potential. In the case of morphine, methadone and meperidine this was antagonized by nalorphine. © 1961, by The Williams & Wilkins Company