Figure 8.

BOLD activity in the cerebellum derived from clinical fMRI examinations at 3 and 7 T. Somatotopic organization of motor function of the anterior cerebellum lobe can be resolved at 3 T (a). Tongue activation (green) is seen posteriorly near the primary fissure (blue arrow), toe tapping (magenta) activation is seen anteriorly, and activation related to finger tasks is seen in the mid-portion of the anterior lobe. This follows the cerebellar homunculus. Motor activity in the anterior cerebellar hemisphere can be exquisitely demonstrated with bilateral hand clenching at 7 T (b). Silent word generation produces activity consistent with bilateral lip motor function in the bilateral anterior lobes at 3 T (c). Expressive language tasks also often produce tongue/lip motor activation thought to be related to ‘silent word’ generation during the task (yellow). Left occipital lobe visual cortex activity also incidentally depicted. Additional language tasks (rhyming task = blue; reading comprehension task = green; semantic decision task = magenta; silent word generation task = yellow) with activity co-localizing to right posterior cerebellar lobe spanning Crus I and II (same patient as c) (d). This patient has strong left cerebral hemisphere language dominance on fMRI (not shown). BOLD, blood oxygen level dependent.