An introduction to the molecular mechanisms underlying synaptic transmission; review of the principal neurotransmitter systems and the biochemical, anatomical and behavioral methods used to study these systems. Course Information: Same as NEUS 511. Prerequisite(s): Grade of B or better or concurrent registration in NEUS 501 and Grade of B or better or concurrent registration in NEUS 502; or Grade of B or better or concurrent registration in BIOS 484 and Grade of B or better or concurrent registration in BIOS 485; or consent of the instructor.