PSYC 370 Lecture Notes - Lecture 18: Rodent, Preoptic Area, Amygdala
Document Summary
Has to also be mechanism to reward behaviour in order for species to do it again: (cid:373)ales a(cid:374)d fe(cid:373)ales (cid:373)a(cid:455) do ea(cid:272)h other"s (cid:271)ehaviours duri(cid:374)g (cid:272)ertai(cid:374) (cid:272)o(cid:374)te(cid:454)ts. Neural control of sexual behaviour: the medial preoptic area (mpoa) is critical for male-type sexual behaviour. Mpoa and male-type sexual behaviours lesions of the mpoa disrupt male-type copulatory behaviours (in both sexes: electrical stimulation of the mpoa induces male-type copulatroy behaviours (with an appropriate target - ex. Anestatized female: mpoa neurons are active during copulation, firing rate increased, c-fos e(cid:454)pressio(cid:374) i(cid:374)(cid:272)reased ((cid:272)ells (cid:374)or(cid:373)all(cid:455) do(cid:374)"t have this i(cid:374) the(cid:373), so respo(cid:374)se i(cid:374) response to copulation, mpoa contains androgen receptors. Infusions of testosterone into the mpoa restore copulation in castrated male rats. Da in the mpoa and male sexual behaviour. Injecting male rates w/ dopamine antagonist prior to copulation: decreases male sexual behaviour, decreases c-fos in mpoa.
