Supplementary Figure 9: Spike sorting and unit isolation for extracellular recordings in vivo.
From: A novel pyramidal cell type promotes sharp-wave synchronization in the hippocampus
a) Left and middle, spike waveform properties used for sorting individual extracellular units plotted relative to each other, and the spike autocorrelation function for a recording in which only a single extracellular unit was present. Note the prominent gap around zero-time, indicating clear unit isolation. b) Top, spike waveform properties and spike autocorrelation function (bottom) for a recording in which 2 extracellular units could be clearly identified. Separate units are color coded (magenta, green). Note Y axis difference in bottom panels. c) Spike waveform properties and spike autocorrelation function for a recording in which 3 extracellular units could be clearly identified. Separate units are color coded (magenta, green, orange). Note Y axis difference in bottom panels. Across all recording session we found an average of 1.3 units per recording.
