Classification of the FS-Units and RS-Units.

(A) Shown were representative traces, recording from two neurons in V1 cat. (B) The recorded action potential waveforms were averaged and normalized. (C) The distribution of waveform durations was significant bimodal according to Hartigan’s dip test (P < 0.01). (D) The scatterplots of each cell’s peak firing rate versus spike duration. The average of peak firing rates for FSUs was significant stronger than those of RSUs (P = 0.0003). The blue and red solid line indicate the average of peak firing rate of RSUs and FSUs for each.