Figure 10.
DA enhanced PY excitability, and this was unaffected by removal of LP. Comparisons of the effects of LP hyperpolarization (to remove the LP→PY synaptic interaction) on PY burst duration (A), the number of action potentials per PY bursts (B), and the PY duty cycle (C), under control and dopamine (DA) conditions. DA significantly excited the PY neurons by all three measures (repeated measures ANOVAs; p < 0.003 for all comparison), but removal of LP had no effect (repeated measures ANOVAs; p > 0.42 for all comparison).