Figure 3.

Grand average ERP waveforms at electrode Fz. (A) Both traumatic and nontraumatic MCS patients had increased P3a amplitudes at the frontal-central electrode. (B) The waveform difference between traumatic and nontraumatic groups with the same diagnosis. P3a amplitudes were enhanced in the nontraumatic participants compared with the traumatic participants. The grey bars indicate regions of significant difference between conditions (P <0.05, FDR corrected). (C) The scalp topography of P3a. Positive activation was detected between 280 ms and 320 ms in frontoparietal electrodes for nontraumatic MCS and UWS. NT=nontraumatic, T=traumatic.