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

<div>Statistical behavior of spatial parameters set <svg height="18.1056pt" id="M229" style="vertical-align:-5.529pt" version="1.1" viewbox="-0.0498162 -12.5766 91.0509 18.1056" width="91.0509pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M293 -169V-141C218 -131 209 -90 209 -44C209 19 222 85 222 152C222 207 198 255 139 269V273C199 286 222 334 222 388C222 454 209 523 209 588C209 632 218 671 293 681V709C234 709 148 695 148 577C147 513 155 438 155 372C155 337 152 291 64 285V256C152 250 155 204 155 169C156 105 148 31 148 -41C148 -157 234 -169 293 -169Z" id="g113-124"></path></g><g transform="matrix(.013,0,0,-0.013,6.866,-3.549)"><path d="M470 557C393 591 314 624 246 666H224C156 624 76 591 0 557L12 532C86 550 163 573 235 596C309 572 384 550 458 532L470 557Z" id="g119-17"></path></g><g transform="matrix(.013,0,0,-0.013,4.511,0)"><path d="M558 587C558 666 497 712 432 712C379 712 330 691 284 650C212 586 178 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Solid line is the probability density estimated from the data, dashed line corresponds to the Laplacian density, and the dashed-dotted line corresponds to Gaussian density.</div>

Mathematical Problems in Engineering

fig10

Figure 10

Figure 10: Detecting Activation in fMRI Data: An Approach Based on Sparse Representation of BOLD Signal 