Fig. 3.

Characteristics of spikes and interspike intervals (ISIs) for MFs, GoCs, and PCs. A: typical examples of spikes for different types of neurons. We identified timings of onset, offset, and peaks of negative and positive potential changes of the spikes. We then calculated intervals between adjacent events to quantify the characteristic waveforms of the neurons. For instance, typical spikes of an MF were divided into 5 periods. In contrast, typical spikes of a GoC or SSs of a PC were generally divided into 3 periods with different durations. B: average intervals for each period. Durations of the second and third periods were significantly different between GoCs and SSs of PCs (***P < 0.01). C: distribution of median ISI of the 3 types of cerebellar neurons in the resting state. 25 PCs, 25 GoCs, and 73 MFs were used. They were selected because they were recorded in the same track and/or in a nearby track using the same electrode and allowed comparison of data recorded with similar experimental conditions.