cerebellum

cerebellum function

coordination of movement (motor control), motor planning, shifting attention
forms roof of 4th ventricle

flocculonodular lobe

nodulus and both flocculi, connected internally

intermediate part

area on either side of vermis, also known as paravermis

superior cerebellar peduncle

mainly efferent fibers from deep cerebellar nuclei to diencephalon and cortex
afferent ventral spinocerebellar tract and ceruleocerebellar tract, bring info about motor/sensory processes in body to compare to plan

middle cerebellar peduncle

pontocerebellar and raphecerebellar tracts

inferior cerebellar peduncle

juxtarestiform: reciprocal connection to vestibular nuclei
restiform: fibers from brainstem and spinal cord (dorsal spinocerebellar tract, cuneocerebellar tract, olivocerebellar tract, reticulocerebellar)

fastigial nucleus

most medial, communicates with vermis

intermediate/interposed nuclei

emboliform and globose, communicate with intermediate zone

dentate nucleus

lateral hemisphere

anatomical divisions

anterior and posterior lobes divided by primary fissure
flocculonodular lobe

functional divisions

spinocerebellum: vermis and intermediate zone
vestibulocerebellum: flocculonodular lobe
cerebrocerebellum: lateral hemispheres

vestibulocerebellum

eye movement and postural control
associated with vestibulospinal tract
communicates with vestibular and reticular nuclei

spinocerebellum function

controlling ongoing movement (error correction, active during movement), proximal and postural muscles

spinocerebellum: vermis part

proximal and trunk muscles
fastigial nucleus: medial descending systems (axial and proximal motor execution, especially extension)
med and lat vestibulospinal tract, med reticulospinal, tectospinal

spinocerebellum: intermediate part

distal UE and LE muscles
interposed nuclei: lat descending systems (distal motor execution)
lat reticulospinal, rubrospinal

cerebrocerebellum

aka neocerebellum
distal limb movement, movement planning, time interval judging (lesion causes dysdiadochokinesia)
dentate nucleus to VA/VL motor or premotor cortices (motor planning, initiation, timing) and red nucleus and inf olivary nucleus
corticospinal, corticobulbar, rubrospinal