Koyama, Y., Fujita, I., Nishino, H. and Oomura, Y.
Nail. Inst. Physiol. Sci., Okazaki 444,
Dept. Physiol., Fac. Med., Kyushu Univ., Fukuoka 812
To locate the brain areas involved in female sexual behavior, various parts
of the hypothalamus of the female macaque monkey were stimulated under partially-restrained
conditions with the partner male in front of her. Immediately after the stimuli
(duration:0.5 ms; frequency:50 Hz; pulse number:125; intensity: 300-500 μA),
delivered to the preoptic area, lateral, dorsomedial, ventromedial and posterior
hypothalamus, the female moved her body restlessly and extended her legs touwards
the partner . This behavior was in some cases followed by presenting-like posture;
the stimulated female lifted her rump towards the partner responding to the
partner's touching. Since these behaviors occurred reproducibly after the stimulus
and were seen only in the female, these behaviors were considered to be stimulus-evoked
ones and components of female sexual behavior. The results suggest that the
hypothalamus has facilitatory roles in the sexual behavior of the female monkey.