borderline significantP = 0.092
Correlation analysis We determined that the average amplitudes of P3 evoked by inclusion were not significant and negatively correlated with BDI scales ( r = –0.234, P > 0.05), but were borderline significant and negatively correlated with the scores of anhedonia items ( r = –0.331, P = 0.092), which suggested that with higher scores of anhedonia items, P3 amplitudes would be lower.