Fig. 1.

EEG responses to NoGo trials. Top left: Schematic diagram showing the positions of the three electrodes (Fz, FCz, Cz) displaying a difference between mTBI, PTSD and healthy controls. Top right: ERP waveforms for the mTBI, PTSD, and control groups for the Cz electrode. Red box highlights difference between groups on the N2 wave. Bottom: Barplots of peak amplitude on the N2 wave for the mTBI, PTSD and control groups for the Fz, FCz and Cz electrodes. For all three electrodes, N2 peak amplitude is significantly lower in the controls compared to both the mTBI and PTSD groups. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)