Fig. 7.

Representative recordings of single channel activity in an outside-out patch obtained in the absence and presence of renzapride (0.1 μM). Traces on the left are 6 examples of individual responses to axonal stimulation (at arrow). Under control conditions axonal stimulation elicited single channel activity after 2 of 6 stimuli. Traces on the right show recordings from the same patch during renzapride application. Single channel activity was detected after 4 of 6 stimulations. It is important to note that the traces shown in this figure are individual sweeps recorded after single stimuli. They are qualitatively different from the ensemble averages of multiple sweeps shown in Fig. 6.