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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Neuroimage. 2013 Apr 13;78:372–384. doi: 10.1016/j.neuroimage.2013.04.017

Figure 2. fMRI activations collapsed at 3 – 8 seconds and ROI selections; ROI-specific BOLD time courses; within-ROI BOLD TTH distributions.

Figure 2

(A) During the main (visuomotor) experiment, both visual (V) and motor (M) cortices were activated. The black outlines indicate the ROIs thresholded from these statistical images. PPC: posterior parietal cortex; S: somatosensory cortex; preM: premotor cortex (B) During the control (motor-visual) task, V and M cortices were activated. Again, the black outlines indicate the ROIs; these were over 80% overlapping with the main experiment ROIs in panel A. PPC: posterior parietal cortex; S: somatosensory cortex; preM: premotor cortex (C – D) The corresponding ROI-specific BOLD responses (peak amplitudes normalized across ROIs, group level). The order of activations clearly follows the order of external events (stimuli and task). The signal-to-noise ratio across all ROIs was 29. (E – F) Spatial distribution of latencies (TTH) within the visual and motor ROIs. Variability within ROIs was much smaller than delays across ROIs, suggesting that voxel-to-voxel variability did not confound the results. (G – H) Histograms of latencies (TTH) within the visual and motor ROIs.