Loading...
The motor neurons that exert voluntary control of the structures in and around the oral cavity (the facial and buccal muscles and those that move the pharynx, larynx, tongue, and jaw) are located in the lateral convexal precentral gyrus region near the sylvian fissure. These neurons give rise to corticobulbar fibers that course through the internal capsule and then descend with the pyramidal tract into the brainstem. An aberrant corticobulbar bundle separates from the main pyramidal tract and travels near the medial lemniscus to reach the appropriate motor nuclei of the cranial nerve. The muscles of the oral cavity work together in speaking and swallowing.
In this study, the frequency and clinical characteristics of supranuclear tongue palsy…