Feedback Control in the Olivocerebellar Loop
About 40 years ago, a subpopulation of small neurons in the cerebellar nuclei was shown to project to the inferior olive, the source of the climbing fiber input to the cerebellum. This nucleo-olivary projection follows the zonal and probably also microzonal arrangement of the cerebellum so that closed loops are formed between the neurons in the olive, the cerebellar cortex, and the nuclei. Althoug