Neural correlates of impairments in music emotion processing in major depressive disorder: Evidenced from an event-related potential study

Figure 4 Amplitude distribution of the P300 event-related potential during stimulus onset and button-response phases. A-C: Present the P300 amplitude across different electrode locations (left prefrontal, right prefrontal, central regions) and three stimulus types (neutral, negative, positive) in the stimulus onset phase; D-F: Illustrate the P300 amplitude at corresponding electrode locations and stimulus types in the button-response phase. Green bars represent the patient group, and dark blue bars represent the healthy control group; error bars indicate standard errors. MDD: Major depressive disorder; HC: Healthy control.