Inferior Olive

Oveview:

Adapted from https://en.wikipedia.org/wiki/Inferior_olivary_nucleus:

The inferior olivary nucleus (ION) house the cell bodies of the olivocerebellar fibers. These neurons are the major input source for the cerebellum (the climbing fibers). Each climbing fiber targets a single climbing fiber. There are three major components of the IO.

• Primary olivary nucleus (PO) – This is the major laminar structure. It receives signals from other components of the brainstem, such as the red nucleus and the N. Darkschewitsch. The PO also receives signals from the cerebral cortex. The PO targets the intermediate cerebellum as well as the cerebellar hemispheres.

• Medial accessory olivary nucleus (MAO) – The MAO receives signals from the tectum and the pretectum. Climbing fibers from the MAO synapse with the vermis, the flocculus, and the cerebellar hemispheres.

• Dorsal accessory olivary nucleus (DAO) – It is the smallest nucleus in the IO. It receives signals from the spinal cord and the dorsal column nuclei. The DAO synapses with vermis.

Synapse with Purkinje cells

Divergence

10 [LoebnerEE-1989], Fig. 2

Convergence

1 [LoebnerEE-1989], Fig. 2

Synapse with DCN

Divergence

Unknown [LoebnerEE-1989], Fig. 2

Convergence

Unknown [LoebnerEE-1989], Fig. 2

Synapse with Golgi cells

Divergence

Unknown [LoebnerEE-1989], Fig. 2

Convergence

Unknown [LoebnerEE-1989], Fig. 2

Synapse with Basket cells

Divergence

Unknown [LoebnerEE-1989], Fig. 2

Convergence

Unknown [LoebnerEE-1989], Fig. 2

Synapse with Stellate cells

Divergence

Unknown [LoebnerEE-1989], Fig. 2

Convergence

Unknown [LoebnerEE-1989], Fig. 2