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. 2021 Jan 14;8:9. doi: 10.1038/s41597-020-00790-x

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© The Author(s) 2021

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Fig. 2 — Neuronal firing and spike sorting quality metrics. (a) Example neuron in the amygdala. Top: Peristimulus time histogram (bin size: 100 ms; step size: 10 ms) for aversive (red) and neutral (blue) conditions. Shaded areas represent ± s.e.m. across trials of all spikes associated with the neuron Inset: mean extracellular waveform ± s.e.m. Bottom: Raster plot of trials reordered by trial condition for plotting purposes only. The trial onset is at time t = 0. (b) Histogram of percentage of inter-spike intervals (ISI) <3 ms. The majority of neurons had less than 0.5% of short ISI. (c) Histogram of average firing rate for all neurons. (d) Histogram of the signal-to-noise ratio (SNR) of the peak of the mean waveform.