A forebrain-retrorubral pathway involved in male sex behavior is GABAergic and activated with mating in gerbils

▶The mating-related ventral BST/MPN projection to the retrorubral field is GABAergic. ▶Mating activation of the ventral BST-RRF pathway matches its functional redundancy. ▶Most ventral BST cells activated by mating make GABA but do not project to the RRF. ▶The gerbil RRF contains GABAergic neurons.