Brain regions and estimated HDR associated with the Visual Network. (A) Dominant 5% of component loadings for the Visual Network (Network 2); positive loadings in red, threshold = 0.17, max = 0.31, no negative loadings. Montreal Neurological Institute Z-axis coordinates are displayed. (B) Mean finite impulse response-based predictor weights averaged across groups, plotted as a function of poststimulus time. a = 30% > 10%; b = 10% > 30%. ⁎ = ps < 0.05, uncorrected. Error bars are standard errors.