ROC methods for evaluation of fMRI techniques.
Receiver operating characteristic (ROC) methods provide a standardized and statistically meaningful means for comparing signal-detection accuracy. A brief overview of ROC methods is presented. Example applications include a comparison of four different postprocessing algorithms operating on simulated fMRI time-course data sets and on human null data sets to which a simulated fMR response had been added. ROC methods also were used to reanalyze one data set from a previously published work. Additional ROC methods that also may be useful for fMRI comparisons are described.
University of Wisconsin-Madison, Madison 53705, USA.
J A
JA
Sorenson
X
X
Wang
D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D008279:Magnetic Resonance Imaging; D012372:ROC Curve