Fig. 4

Auditory compound action potentials are affected by Nav1.9 knockout. Nav1.9 knockout induces higher CAP P1 threshold, *p = 0.013 with Mann–Whitney test (a), lower CAP P1 amplitude, *p = 0.041 with independent samples t test (b), compared with WT group; c the CAP P1 latency is not affected at the time point of postnatal day 60, p = 0.242 with independent samples t test. d Representative CAP waveforms from a WT mouse. e Representative CAP waveforms from a Nav1.9^−/− mice. Data are expressed as mean ± s.d