Thalamus Both ventral lateral and ventral anterior thalamic nuclei receive input from the striatum through the internal pallidum. The cerebellum is involved with at least three broad functions. Maintenance of posture and balance. Maintenance of muscle tone. Coordination of voluntary movements.
Initiation takes place in the motor cortex but is modified at the level of the cerebellum.
Afferent pathways The cerebellum receives information from the spinal cord and vestibular nuclei. Input derives from mossy fibers and climbing fibers. Climbing fibers originate in the inferior olivary complex and project to the dendritic arbors of the Purkinje cells. Efferent pathways The Purkinje cell is the major projection neuron of the cerebellum. It projects to deep cerebellar nuclei, the red nucleus and the reticular system.