Distribution of cerebellar neurons projecting directly to the spinal cord: an HRP study in the Japanese monkey and the cat.
Distribution of cerebellar neurons which send their axons to the spinal cord was examined in 7 Japanese monkeys (Macaca fuscata) and 10 cats by the horseradish peroxidase (HRP) method; retrograde HRP-labeling of cerebellar neurons was observed after HRP injection into the spinal cord. The vast majority of cerebellospinal neurons were located in the fastigial nucleus (FN), posterior interpositus nucleus (PIN), and intermediate medullary region (IMR) between the FN and PIN. These neurons were suggested to send fibers to the cervical and upper thoracic cord segments in the monkey, or to the cervical cord segments in the cat. A few cerebellospinal neurons were also found in the anterior interpositus nucleus (AIN) and the dentate nucleus (DN).
D000818:Animals; D002529:Cerebellar Nuclei / Q000033:anatomy & histology; D002531:Cerebellum / Q000033:anatomy & histology*; D006735:Horseradish Peroxidase; D008251:Macaca; D008526:Medulla Oblongata / Q000033:anatomy & histology; D009412:Nerve Fibers / Q000648:ultrastructure; D009474:Neurons / Q000648:ultrastructure; D013045:Species Specificity; D013116:Spinal Cord / Q000033:anatomy & histology*
D006735:Horseradish Peroxidase