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Grand average ERP waveforms for correct regular (grey) and irregular (black) participles for a subset of 9 electrodes representing the 9 ROIs (nose upward). (a) High frequency regular (RH) and irregular (IH) participles; (b) low frequency regular (RL) and irregular (IL) participles. For both frequency types, regular participles are associated with a larger negative-going (upward) deflection peaking at around 400 ms most pronounced over left anterior electrodes, i.e., a LAN.
