Grand average ERPs (mean amplitude) for all 26 electrodes, right-lateral, left-lateral, right-horizontal, left-horizontal (‘rle’, ‘lle’, ‘rhz’ and ‘lhz’), and the mastoid (‘A2’) at the verb position. Waveforms were subjected to a digital low-pass filter (10 Hz) for visualization. A clear negativity emerges for incongruent relative to congruent sentences at the verb when the mismatch between verb and action becomes apparent. The ERP comparison at the mid-parietal (‘MiPa’) site is shown enlarged.