ERP results for different types of voices. (a) ERP waveforms and scalp topography distributions elicited by different types of voices. The dots in the scalp topographies indicate the electrodes included in the analysis. (b) Violin plots depict the N1, P2, and LNC amplitudes. Box plots illustrate the quartile range of the data, with the dot representing the median. ns: P > .05, *P < .05, **P < .01, ***P < .001.