| Term | Definition |
|---|
| cerebellum | involved in the coordination of movement, works ipsilaterally, three functions: equilibrium and balance, regulates muscle tone, sensorimotor coordination (not execution) |
| dentate nucleus | lateral zone; planning of movement |
| interpositus nucleus | intermediate zone; sensory feedback guidance (somatotopic maps) |
| fastigi nucleus | medial zone (vermis); equilibrium/balance |
| olivo-cerebellar path | climbing fibers |
| spino-cerebellar pathway | sensory afferent input |
| pontine-cerebellar pathway | from cortex; 'mossy' fibers |
| efferent pathway | exit route from cerebellum |
| mossy fiber input | directly synapse with granule cells |
| granule cells | axons ascend to the middle layer where Purkinje cell bodies are and bifurcate (like a "T") horizontally |
| parallel fibers | makes synaptic contact with approximately 50 Purkinje neurons |
| climbing fiber input | each synapses with approximately 10 Purkinje cells and each receives only one |
| molecular layer | the outermost layer of the cortex, and nearly cell-free |
| Purkinje cells | central players in the circuitry of the cerebellum; only output from the cerebellum; inhibit the deep nuclei (via GABA) |
| motor cortex | eye movement control |
| efferent copy | an internal copy created with a motor command of its predicted movement and its resulting sensations |
| re-afference | afferent signals from activated muscles ascend to intermediate zone (spino-cerebellar tract) |
| intermediate zone | sensory motor regulation; somatotopic representation |
| lateral zone | pre-programming planning |
Combine with other sets
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