Fig. 5.

Gabazine blocks interneuron inhibition of Purkinje cells but leaves conditioned responses to a 300-ms interstimulus interval intact. (A) Average Purkinje cell responses (n = 3) ± SEM to interneuron activation by parallel fiber stimulation before (green) and after (cyan) injection of gabazine. The horizontal orange bar indicates off-beam stimulation (800 ms, 81 pulses, 100 Hz). (B) The average response profile to a 400-ms conditional stimulus before (blue) and after (red) in the cells shown in A. Black and purple horizontal bars indicate the interstimulus interval (300 ms) and conditional stimulus (CS, 400 ms), respectively.