Detecting Activation in fMRI Data: An Approach Based on Sparse Representation of BOLD Signal

<div>Activation maps for the Faces task generated with the proposed method by using the reduced dictionary (a) and extended dictionary (b). The activated regions contained in the ellipses show the effect of “filling” observed when the parameter estimation is performed by using the extended dictionary.</div>

Mathematical Problems in Engineering

fig9

Figure 9

Figure 9: Detecting Activation in fMRI Data: An Approach Based on Sparse Representation of BOLD Signal 