Figure 3. Short-latency excitation in an FA I afferent.

A, raw data for unit 1 in Table 1, with EMG from FDS (other EMG traces were flat); asterisks indicate the occurrence of spikes used to generate trace in D; B, afferent autocorrelogram and superimposed spikes; C, averaged data from 9718 sweeps; dashed line indicates onset latency 20.8 ms; D, repeated averaging using last spike from each burst (first 800 bursts of record); dotted line indicates onset latency of 18.1 ms.