A) Pearson correlations for Glx/tCr and GABA/tCr levels for both groups. Concussed group: r = -.16, p = .63; Control group r = .75, p = .01.
B) Pearson correlations for GABA/tCr levels and LICI percentage of inhibition for both groups. Concussed group r = .92, p = .0001; Control group: r = -.12, p = .72.
C) Pearson correlations for M1 mean thickness and GABA/tCr levels for both groups. Concussed group: r = -.34, p = .30; Control group: r = .50, p = .14