FIG. 12.

Effect of TTX on the stimulus polarity-dependent responses of Figure 11, calculated as the half differences between the corresponding pairs in Figure 11; the results represent the odd harmonics, here dominated by the fundamental. A a Polarity-dependent probe responses pre-TTX and 1.2∙post-TTX (compensated for post-TTX reduction in CM). A b Netto effect of TTX on probe response (traces pre-TTX–1.2∙post-TTX in (A a)): this is the RW-ttxNP. B a, b Same as (A) but for the masked responses. C a Decaying neural component pre-TTX (red, A a–B a, CAP filtered); envelope indicated by thick line. C b Same as Ca but post-TTX (dashed black (A a–B a)/1.2 CAP filtered). D Overlay of (A b) and (C a) for comparison (magnitude, ×3 relative to other panels). Accolade: onset lag relative to onset of CM (vertical dotted line). Vertical dashed lines are guide lines to indicate the phase relation between (A b) and (B b).