Figure 5: Multi-unit activities of the anesthetized cat’s AI. The signals were either /ba/-/pa/ syllables (= plosive consonant vowel syllable) with variable VOT (A) or pairs of acoustic pulses with variable intervals (B) (see inset in the right column). Recording was made from the same cortical locus in A and B. Raster dot displays of discharges (left column) and peri-stimulus time histograms (PSTH; middle column) were organized vertically according to VOT (A) or pulse interval (B), and horizontally for the time after the preceding signal (= consonant release in A; 1st pulse in B). The maximal discharge rate within a shifting 30-ms time window (bordered between two oblique lines) in PSTH was plotted as a function of VOT or pulse interval (right column) (Adapted from Tomita et al. [56]).