Testosterone Regulation of Sexual Reflexes in Spinal Male Rats

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Science  10 Mar 1967:
Vol. 155, Issue 3767, pp. 1283-1284
DOI: 10.1126/science.155.3767.1283


Castrated male rats with complete midthoracic spinal transections were maintained on exogenous testosterone; they showed intermittent clusters of genital responses consisting of erections, quick flips, and long flips of the penis when gentle pressure was con stantly applied to its base. The number of these genital responses per 30-minute test was markedly influenced by withdrawal or administration of testosterone.