Alpha-melanocyte stimulating hormone facilitates learning of visual but not auditory discriminations.
The neuropeptide alpha-MSH has been proposed to influence learning and memory by increasing visual attention. To test the possibility that MSH selectively affects visual learning, rats were tested in learning tasks in which the cues were either visual or auditory. Maze and bar-press tasks were used. MSH administration increased the rate of learning of the visual tasks, regardless of the task difficulty or the type of response required of the rat. MSH had no effect on the rate of learning of the auditory tasks. These results support the hypothesis that MSH facilitates learning by influencing some aspect of visual information processing.
D000161:Acoustic Stimulation; D000818:Animals; D003216:Conditioning, Operant / Q000187:drug effects; D004193:Discrimination Learning / Q000187:drug effects*; D006309:Hearing; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000494:pharmacology*; D010775:Photic Stimulation; D051381:Rats; D011919:Rats, Inbred Strains; D012054:Reinforcement, Psychology; D014796:Visual Perception
D009074:Melanocyte-Stimulating Hormones