Fig. 2. Summary of average effects of capsaicin (CAP; horizontal bars) on solitary tract (ST) evoked excitatory postsynaptic current (eEPSC) amplitude (A , normalized to control, 1.0) and holding currents (B ) for capsaicin-sensitive (circles, n = 10) and capsaicin-resistant (squares, n = 9) cells. Capsaicin, 200 nm, blocked eEPSCs in capsaicin-sensitive but did not alter those in capsaicin-resistant cells. Holding current increased in capsaicin-sensitive but not in capsaicin-resistant neurons. Points and bars are mean ± SD. (C ) *Mean of EPSC latencies for capsaicin-sensitive neurons (n = 19) was significantly greater (P = 0.011) than for capsaicin-resistant (n = 23).