Detecting Activation in fMRI Data: An Approach Based on Sparse Representation of BOLD Signal
(a) Activation maps (left to right: slice 1 to slice 4; top to bottom: group 1 to group 4) for stimulus , set 20. (b) Number of false positives (top) and false negatives (bottom) for sets 1 to 20 and groups 1 to 4.
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