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. 2021 Feb 15;14:149–158. doi: 10.2147/PRBM.S292172

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© 2021 Diao et al.

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Grand-averaged ERP results. (A) Illustration of ERP waveforms located at the frontal cortex for higher value difference (HVD, red line) and lower value difference (LVD, blue line) conditions. The grey box represents the N200 component (290–340 ms), and the scalp topographic map delineates the frontal region of interest (ROI) comprised of the F1, Fz, F2, FC1, FCz, and FC2 electrodes. (B) Amplitude of the N200 component for the HVD and LVD conditions. (C) Illustration of ERP waveforms at contralateral location, ipsilateral location for the HVD and LVD conditions. The grey box represents the N2pc component (230–280 ms), and the scalp topographic map delineates the posterior ROI comprised of P5, P7, PO5, PO7, P6, P8, PO6, and PO8 electrodes. (D) Amplitude of the N2pc component as function of value difference (VD) level and contralaterality. Error bars denote standard error across participants. Asterisk denotes significant difference (p < 0.05).

Abbreviation: NS, non-significant difference.