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. 2015 Jul 16;6:7751. doi: 10.1038/ncomms8751

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(a) Results obtained by applying total activation to a voxel's time course in posterior cingulate cortex (PCC): measured noisy BOLD signal (green) and activity-related signal obtained after TA regularization (top), block-like activity-inducing signal without the hemodynamic blurring (middle) and sparse innovations, derivative of activity-inducing signals, (bottom). (b) Activity-inducing signals (black) and innovations (magenta) for PCC (top), angular gyrus (AG) and superior frontal medial cortex (SFM). (c) Whole-brain transient activity maps at randomly selected time points indicated by the coloured bars in b.