SPM analysis of time × frequency images. (a) Time-frequency images were calculated for each subject and smoothed by convolution with a Gaussian kernel. (b) A -statistic image was calculated from the smoothed time-frequency images and thresholded at (uncorrected). The location of the peak bin is shown. The white dotted box indicates our illustrative a priori window of interest. (c) Statistical test restricted to the window of interest shown in (b) revealed a significant cluster (, cluster-level FWER correction). This figure was adapted with permission from [15].
