Effects of biogenic amines on central thermoresponsive neurones in the rabbit

1. Single unit activities were recorded with five‐barrelled micropipettes from the thermo‐responsive neurones in the preoptic area and the mid‐brain reticular formation in urethanized rabbits. 5‐hydroxytryptamine (5‐HT), noradrenaline (NA) and acetylcholine (ACh) were applied micro‐iontophoretically to the immediate vicinity of the recording cells.