Figure 2. Signal amplitude and independence in resting-state data. a) The image shows the location of nine voxels crossing the cortical ribbon (“cross-cortex line”) that were used in the successive analysis. b) Power of low-frequency fluctuations at different points of the cross-cortex line calculated for ten different pre-processing pipelines. c) Mean homogeneity, assessed as correlation and coherence between pairs of voxels in the cross-cortex-line. Error bars represent standard error of the mean. Different letters indicate significantly different groups.

Figure 3. Identification of evoked responses. a) Line activation profiles, calculated as the mean beta-value across 20 lines (see inset on the bottom left), for two task-fMRI scans involving either motor-only (M) or motor and sensory processing induced by touch (M+T), computed after pre-processing with ten different pipelines. The dashed lines indicate the intensity of the mean functional image. b) ROIs selected for group analysis. c) The GM to CSF ratio of the t-statistic. Asterisks indicate significant differences between pre-processing pipelines (p<0.05).