Fig. 5: Bilateral motor cortex activation in Subject 1. | Nature Communications

Fig. 5: Bilateral motor cortex activation in Subject 1.

From: MR perfusion source mapping depicts venous territories and reveals perfusion modulation during neural activation

Fig. 5

a Imaging slice showing four selected veins: two (orange) drain the activated motor cortices and two (blue) do not and are used as control. b The color-coded veins overlaid on a 3D Quantitative Susceptibility Mapping (QSM) venogram. c Blood Oxygenation Level Dependent (BOLD) activations (green) overlaid on the 3D QSM-venogram showing bilateral motor cortex activation. d Top: Perfusion source maps for activated and control veins at two mixing times. Middle: The percentage change between task and baseline perfusion source maps showing mostly positive and some negative percentage change in veins draining the activated regions. Little or no percentage change is observed in the veins selected as control. Bottom: BOLD T-scores, from one-sided T-test, for the coronal sections containing each vein. Venous territories are marked with yellow dashed contours. Source data are provided in ref. 54.

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