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P

Propulsive/excitatory cerebellar

Excitatory cerebellar serenity

Olivocerebellar mesodiencephala circuit

The excitation/excitatory cerebellar affective (the outgoing signal flow) targets a large number of different core areas in the brainstem and midbrain. Among other things, to:

1/ The balance nuclei2/ Cores in the lateral and medial parts of the formatio reticularis, e.g. a large number of pattern generators/MPG that transmit threads in the reticulo-spinal pathways.

3/ Core areas of the four-mound plate4/ red nucleus 5/ several thalamus nuclei, including the VL nucleus that transmits wires directly to the primary motor cortex.

6/ a group of nuclei in the mesodiencephalic border area. These include the Darkschewitsch nucleus, parts (the parvocellular nucleus) of the red nucleus, the interstitial nucleus of Cajal and portions of the formatio reticularis.
This nuclear group is one of three switching centres in the so-called olivocerebellar mesodiencephalic circuit, which also includes the oliva inferior complex and excitatory cell groups in the cerebellar nuclei. Activity in the circuit increases on the climbing wiresignaling.

At rest, the excitatory signal flow exhibits a spontaneous frequency of 40-50 impulses/second. When movements are performed, the frequency is varied up or down, which affects the activity of the MPG units concerned.





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