Abstract
The role of the pelvic nerves in mediating erection in the male rat was investigated. The frequency and duration of erections and other criteria of mating behavior were studied in a group of animals in which the pelvic nerves were bilaterally transected. Compared with the performances of sham-operated animals, no differences were obtained in 4 postoperative mating tests. It is concluded that erection in the rat is not mediated by the pelvic nerves. The effects of bilateral transection of the pudendal nerves upon mating behavior and the temporal patterning of this behavior were studied in adult male rats. It appeared that erection, intromission and ejaculation were prevented, while mounting behavior and the temporal patterning of the mating behavior were not affected. The results indicate that erection in the rat is mediated by the pudendal nerves. Moreover it is concluded that by means of pudendal nerve transection sexual motivation in the rat can be studied without the possible interference of intromissions, for a prolonged period.
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