Waveforms of a representative subject.

Both the onset and abrupt sound pressure increase evoked a triphasic response with peaks at approximately 50 (P50), 100 (N100), and 200 (P200) ms, with peak amplitudes measured in the time windows of 30–80, 80–150, and 150–280 ms, respectively. The EOG does not affect evoked potentials for either LDAEP or change-related responses. LDAEP, loudness-dependent auditory evoked potentials; ISI, interstimulus interval.</p

Grand-averaged waveforms of the onset and change-related responses.

Grand-averaged waveforms of the onset responses (A) and change-related responses (B) for each condition. Red arrowheads indicate the sound (A) and change (B) onsets.</p

Amplitude and latency for LDAEP and the change-related response.

LDAEP and the change-related response are shown aligned. On the right are the P50/N100 and N100/P200 amplitudes corresponding to sound pressure and sound pressure changes, respectively, and on the left are the P50, N100, and P200 latencies corresponding to sound pressure and sound pressure changes.</p

Sex differences in LDAEP and the change-related response in P50/N100 and N100/P200.

Differences in correlation coefficients between LDAEP and the change-related response by are shown for the P50/N100 and N100/P200 components. (TIF)</p