In-vivo GABA*-edited data acquired from a 22.5 mL anterior cingulate grey matter voxel (256 transients, 2.5 s recycle delay, 4 Hz exponential broadening, 2k samples, 2 kHz spectral width) with (top) and without (bottom) retrospective frequency and phase correction plotted with identical intensity axes. Peaks labeled a-d correspond to co-edited macromolecules, N-acetylaspartate, GABA, and a combination of co-edited glutamate, glutamine and glutathione, respectively.