Fig. 6. The slope of the plateau phase determines the onset of the EXP-2 current. (Top) voltage commands; (bottom) corresponding currents from one pharynx. (A) Outward currents in response to varying voltage ramps starting from the same depolarization to +33 mV. (B) Outward currents in response to varying peak depolarizations followed by the same negative ramp of -0.22 V s^-1. On command voltage traces, average timings of EXP-2 current transients are indicated by black diamonds (N=4 pharynxes), and dotted lines show parameters of the wild-type pharynx, as determined by voltage recordings. For clarity, standard deviations for the voltage only are shown in A, and for the timing only are shown in B. All recordings are from wild type.