Spectrally specific temporal analyses of spike-train responses to complex sounds: A unifying framework
Fig 8
p(t), n(t), and s(t) have robust representations of the onset response, whereas e(t) and d(t) do not.
Response of a high-frequency fiber (CF = 5.8 kHz, SR = 70 spikes/s) to a fricative portion (/s/) of the speech stimulus, s3. Stimulus intensity = 65 dB SPL. (A) Stimulus (black, labeled Stim), p(t) (blue) and n(t) (red, reflected across the x-axis). PSTH bin width = 0.5 ms. Number of stimulus repetitions per polarity = 50. (B) The sum envelope, s(t) (C) The difference PSTH, d(t), and (D) the Hilbert-envelope PSTH, e(t). Since the onset envelope is a polarity-tolerant response, all PSTHs capture the response onset except for d(t) and e(t).