Research Article

Functional Topography of Human Corpus Callosum: An fMRI Mapping Study

Figure 3

Callosal BOLD effect evoked by hand motor activation in a normal subject (G.M.). Activation was observed in the primary motor cortex ((a)1) and in the central part of the CC ((a)2), (b) callosal fibers arising from a cortical ROI selected in area MI ((a)1, green circle) cross through the central CC ((b)1 and (b)2, yellow arrows). On DTI images, a thin white line demarcates the CC. Numbers on the brain represent the Talairach coordinates ( , , ) of the focus (green arrows).