ANAT 312 Lecture Notes - Lecture 5: Inferior Cerebellar Peduncle, Superior Cerebellar Peduncle, Deep Cerebellar Nuclei

• School: Queen's University
• Department: Anatomy and Cell Biology
• Course: ANAT 312
• Professor: Leslie W Mac Kenzie

Document Summary

Ponto cerebellar fibres primarily decussate to get to contralaterla side and enter cerebellum via peduncles. Purkinje cell layer these project to the deep cerebellar nuclei and are inhibitory. Input: climbing fibres from the inferior olivary nuclei; excitatory input. Somatosensory afferents and spinal cord (ipsi); motor cortex (contra) Carries afferent sensory information (tactile, pressure, proprioception) from the leg from the spinal cord to cerebellum via superior cerebellar peduncle. Carries proprioception from the leg from spinal cord to the cerebellum via inferior cerebellar peduncle. Peripheral afferents from arms to spinal cord to cerebellum via superior and inferior cerebellar peduncles. Peripheral afferents from the arms to the cerebellum. Synapse in external cuneate nucleus and enter cerebellum via inferior cerebellar peduncle. Vl thalamus motor areas of cerebral cortex and red nucleus (contralateral) Interpositus motor cortex and red nucleus (contra) Fastigial motor cortex, vestibular nuclei and reticular formation (contra) Contralateral to the cortex but ipsilateral to the cerebellum (double cross over)