Complex-Valued Correlation Increases Sensitivity and Specificity in the Analysis of Low Contrast-to-Noise fMRI Time-Series
Mary Kociuba1 and Daniel Rowe1,2
1Mathematics, Statistics, and Computer Science, Marquette University, Milwaukee, WI, United States, 2Biophysics, Medical College of Wisconsin, Milwaukee, WI, United States
standard in fMRI is a magnitude-only statistical analysis of the
data, despite evidence of task related change in the phase time-series. This study demonstrates the increased sensitivity and specificity of implementing complex-valued
correlation models for low magnitude and phase contrast-to-noise ratio (CNR)
values in fMRI data sets.
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