Point 16 Intro Pathway Deficit Note Overview Problems Contents Anatomy

You know that each CEREBELLAR HEMISPHERE influences the SAME SIDE of the body. Lesions of the corticopontine projection and the basilar pontine grey result in CONTRALATERAL deficits in muscle coordination. This incoordination involves both the arm and the leg. In contrast, a lesion of the middle cerebellar PEDUNCLE results in IPSILATERAL deficits in motor coordination of the arm and leg. Why??