Male, 78 years old, with brain lesion. fMRI examination for surgical planning. The hand sensory cortex is identified along the bilateral post-central gyri (see the yellow colored regions on key image 151 series 601). The corresponding motor cortex, although not explicitly visualized, can be extrapolated as directly across the central sulcus from the sensory cortex, which would place the hand motor area in very close proximity and possibly contiguous with the patient's right pre-central mass. (Please note that areas of yellow color mapping along the ventricles and brainstem are likely related to motion. Areas of violet color mapping reflect activation which correlates negatively with the task and which are irrelevant for the purposes of this study.)
Very limited functional MRI due to patient sedation. Only passive sensorimotor manipulation could be performed, and only manipulation of the hands produced reliable functional activation. The hand sensory cortex maps as expected to the bilateral post-central gyri. The corresponding motor cortex can be extrapolated as being directly across the central sulcus from the sensory cortex.