Cerebellum and basal ganglia Flashcards
What side of the body does the cerebellum control?
Ipsilateral
What are the folds of the cerebellum called?
Folia
What is the middle section of the cerebellum called?
Vermis
What is the lateral and intermediate sections of the cerebellum called?
Lateral and intermediate zone of the hemisphere
What is found on the inferior aspect fo the cerebellum?
Flocculonodular lobe
From what nucleus does the flocculonodular lobe receive inputs?
Vestibular nucleus
What type of fibres does the flocculonodular lobe receive from the vestibular nucleus?
Mossy fibres
Name the deep cerebellar nuclei
Dentate, emboliform and globose = interposed, festigal nucleus
Where is the dentate nucleus found?
Lateral zone of hemisphere
Where is the interposed nucleus (emboliform and globose) found?
Intermediate zone of hemisphere
Where is the festival nucleus found?
Vermis of cerebellum
What makes up the interposed nucleus?
Emboliform and globose nucleus
What is the deep cerebellar nucleus of the flocculonodular lobe?
Vestibular nucleus
What pathway transmits motor parts of cerebral cortex to cerebellum?
Pontocerebellar pathway
What pathway transmits proprioceptive input from the whole body via the inferior olive?
Olivocerebellar pathway
What fibres transmits information from the inferior olive to the cerebellum?
Climbing fibres
What fibres transmits all cerebellar afferents other than from the inferior olive?
Mossy fibres
What makes up the vestibulocerebllum?
Flocculonodular lobe and vermis
What is the function of the vestibulocerebullum?
Posture and balance from vestibular nucleus
What makes up the spinocerebellum?
Vermis, fastigal nucleus, intermediate zone of hemisphere, globose and emboli form nuclei
What is the function of the spinocerebellum?
Updates ongoing movement
What provides input to the spinocerebellum?
Pontine nucleus, olivary nucleus
What makes up the neocerebellum?
Lateral zone of hemisphere and dentate nucleus
What is the function of the neocerebellum?
Initiation and planning of movement
What provides the input to the neocerebellum?
Inferior olivary nucleus
Where does information from he neocerebellum go?
Pre-motor cortex, supplementary motor cortex via the thalamus
What cells to mossy fibres interact with in the cerebellum?
Granule cells
What fibres do granule cells give rise to?
Parallel fibres
What do the parallel fibres interact with?
Purkinje cells
Is each parallel fibre unique to each Purkinje cell?
No
Is each climbing fibre unique to each Purkinje cell?
Yes
Where does the output of the purkinje cells go?
Deep cerebellar nucleus
Are the deep cerebellar nuclei inhibitory or excretory?
Inhibitory
If the information is from the hemisphere where will the deep cerebellar nuclei send its axons?
Thalamus
If the information is from the vermis where will the deep cerebellar nuclei send its axons?
Red nucleus
How does modification of ongoing movement occur?
Proprioceptive information from the inferior olive to the cerebellum (climbing fibres) to interposed nucleus (via purkinje cells) to red nucleus and down the rubrospinal tract
How does planning and prediction of movement occur?
Basal ganglia sends information to cerebellum (mossy fibres). From purkinje cells to dentate nucleus to the thalamus to motor cortex (corticospinal tract)
What fibres form the outputs of the olivary nuclei?
Climbing fibres
What would a lesion in the vestibulocerebellum cause?
Staggering gate
What would a lesion in the spinocerebellum cause?
Decomposition of movements
What would a lesion in the portico-cerebellum cause?
Slow speech
What are the nuclei of the basal ganglia?
Putamen, caudate, globus pallidus, substantia nigra, subthalamic
What does the putamen circuit control?
Subconsious execution of learn patterns
Where does the putamen receive input from?
Prefrontal cortex, supplementary motor cortex, somatosensory cortex
What is the function of the caudate circuit?
Cognitive planning
