Raw signal and power spectrum analysis.

<p>(a) Sample raw rs-BOLD signal from grey matter of an mTBI patient(a) and a healthy control brain(b). These time courses were specifically from a 4x4x3mm voxel in the right hippocampus, located at 24.0[L], 5.0[P], 15.0[S] mm in the N27 atlas. (c,d) Power spectrum, from the same voxel from Fig 1a and Fig 1b respectively, showing power-law decay on a log-log scale. A frequency range of 0.08–0.16 Hz was fit because of the consistency in power law scaling behavior (between and within subjects) of this spectral region.