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A. Difference waveform frontal repetition effects (Deviant minus Standard) waveforms at electrode site Fz. Time windows index the MMN (90–130 ms) and P3a (200–260 ms). Arrow indicates stimulus-onset. B. Line plots demonstrate repetition effect in aging across two repeat conditions, 12 & 22 in two time-windows (90–130 ms & 200–260 ms).
