Fig. 8.

Cyclothiazide-insensitive synaptic depression was evident in EPSCs evoked by trains of shocks at 100 Hz recorded at −65 mV in all 3 types of principal cells. A: in a T stellate cell, EPSCs showed relatively little depression. B: in an octopus cell, depression was obvious. C: in a bushy-s cell, synaptic depression was also obvious. D: depression during 100 Hz trains was compared by normalizing EPSCs to the 1st EPSC of each train. The degree of synaptic depression was consistent within a cell type; depression was greater in octopus and bushy cells than in T stellate cells.