PSYC 211 Lecture Notes - Lecture 44: Motor Learning, Entorhinal Cortex, Lobectomy
16 Mar 2017
School
Department
Course
Professor
Document Summary
Nucleus accumbens activity during reinforcement in humans, nucleus accumbens activity increases when people are presented with stimuli associated with money. Nucleus accumbens activity increases when heterosexual men press a lever that presented pictures of beautiful omen (not handsome men) A stimulus that serves as a reinforcer on one occasion may fail to do so on another. Vta neurons signal something that has to be learned. If the rewarding outcome is expected, then there is nothing to be learned. Prefrontal influence on vta the prefrontal cortex provides an important input to the vta the neurons connecting these regions secrete glutamate which causes dopamine neurons in. Vta to fire in clusters of action potentials (bursting or burst firing) Burst firing of vta greatly increases the amount of dopamine secreted in the nucleus accumbens the prefrontal cortex is involved in complex executive functions which are goal directed.
