Figure 3. Representative FP responses to face and auditory stimuli in A1. A, Depth profile of FP responses to the face (red) and the sound (blue) of an exemplar AV vocalization during V-alone and A-alone trials of Task 1. Top to bottom, Positions of superficial to deep channels. Bottom inset, Expanded time courses of the visual and auditory stimuli. B, CSD responses. Downward (negative) and upward (positive) deflections are current sinks and sources, respectively. C, MUA responses. A–C, Lines indicate mean of 183 and 131 responses to visual and auditory stimuli, respectively. Dotted lines indicate the 95% CIs. Horizontal dashed lines indicate the borders between the upper bank of lateral sulcus (UB), supragranular layer (Sg), granular layer (Gr), and infragranular layer (Ig) in the auditory cortex. D, Superimposition of the auditory FP responses at all depths shown in A. Vertical bars represent the timing of two peaks in FP responses (magenta and cyan for N1 and P2 peaks, respectively). *P1, **N1, ***P2 in D-G. E, Amplitude distributions of auditory N1 and P2 across depths. F, Visual FP responses in same format as D. Between D and F, timing windows are different due to difference of the onset timing, 244 ms, between auditory and visual stimuli. However, durations of figures are same between D and F, to compare responses of two modalities at same resolutions. G, Amplitude distributions of visual N1 and P2.