Fig. 8

Effects of the proposed method on real data. A Feature distribution for LG. Light-grey dots represent outliers, and orange, yellow, purple, and green dots denote isolated single units, respectively. B Feature distribution for IF⁺. Data and all formats are the same as A. C Spike waveforms for single units sorted with IF⁺. The colours of the solid lines are identical to the specifications of A. Dark solid lines represent the median of the isolated spike waveforms, and light-gray lines denote anomalies detected by iForest. D The ISI distributions of spikes obtained by two methods for each single unit are illustrated, where the green represents PSO, and the dark represents LG. The solid lines corresponding to each colour depict the results of fitting with the gamma function. E The left panel represents the differences in the mean ISIs between LG and PSO, and the right panel denotes the difference in the mean firing rates between LG and PSO. Each coloured line corresponds to a single unit