2.4.2.6. aMMN. Sequential 1 sample t-tests identified the mean
aMMN duration as 79 ms in younger adults (86e165 ms) and 53 ms
(93e146 ms) in older adults. There was no significant effect of age
on mean aMMN amplitude (F [1,44] ¼ 0.90, p ¼ 0.766) or the peak
latency of the difference wave (F [1,44] ¼ 2.16, p ¼ 0.149) during
these epochs.