Comparison of attenuations and currents at several voltages. (A) Superimposed attenuation traces calculated from di-8-ANEPPS records before and after 9-ACA application, obtained from the same fiber as in Fig. 4. Black, red, blue, green, dark blue, and orange traces correspond to −120, −80, −40, 0, 40, and 80 mV pulses, respectively. (B) 9-ACA–sensitive ICl recorded with the same pulses as in A. (C) Bar graphs showing the voltage dependence of the maximal (black bars) and steady-state (red bars) attenuation. Part of the data shown in these graphs was obtained from the traces in A. (D) Voltage dependence of the peak (black symbols) and steady-state (red symbols) values of the 9-ACA–sensitive ICl. Part of the data shown in these plots was obtained from the records in B.
