Fig. 2.

mEPSCs differ between cells with only auditory nerve input and those with input from parallel fibers.Left, mEPSCs appear as spontaneous inward currents of varying amplitude. Ten consecutive superimposed traces show that mEPSCs occur in all of the recorded cells. In fusiform cells some mEPSCs are rapid, whereas other mEPSCs are small and slow. In cartwheel cells mEPSCs are slow. The observation that they occur more frequently in octopus cells than in other types of cells is consistent.Right, Normalized ensemble averages of individual events from single cells (31–108 events) show that events in bushy, octopus, T-stellate, and tuberculoventral cells are more rapid than in fusiform and cartwheel cells of the DCN. The ensemble average of events in fusiform cells includes both the rapid and slow events. The time of peak was used to align all of the events to be averaged; this leads to an inflection in the rising phase of the average current in the cartwheel cell because the rise times were variable.