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Comparison of face evoked vMMNs using two reference-modes (AVE and REST). Waveforms of temporo-occipital electrodes (PO7 and PO8) and central electrode (CZ) ERPs evoked using three stimulus conditions (neutral, happy, and sad facial expressions) in both control and patient groups are also compared. Solid lines, control group; Broken lines, patient group; AVE, average reference; REST, reference electrode standardization technique; vMMN, visual mismatch negativity.
