Figure 3.
Single-unit responses to 220 Hz vibration of the principal whisker. a–c, PSTH (a), phase histogram (b), and time–frequency plot of 50 consecutive responses (c) with the same conventions as in Figure 2. d–f, The raw spike trace (d) shows four consecutive responses, the last of which is displayed at expanded timescales below (e, f). Although there is no continuous 1:1 response, the majority of spikes occur locked to a consistent phase of the movement cycle. g, Spike waveforms of the single unit. h, i, Additional single response epochs, highlighting the variability of the response pattern.