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Flashcards in cerebellum 3 Deck (21)
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1
Q
Vestibulocerebellum:
anatomical region
A
Flocculonodular
Lobe
2
Q
Vestibulocerebellum: principle input
A
vestibular sensory cells
3
Q
Vestibulocerebellum: deep nucleus
A
vestibular
4
Q
Vestibulocerebellum: principal destination
A
axial motoneurons
5
Q
Vestibulocerebellum: function
A
1. axial control
2. vestibular reflex
3. balance
4. eye movement
6
Q
Spinocerebellum
vermis: anatomical region
A
vermis
7
Q
Spinocerebellum
vermis: principal input
A
1. visual
2. auditory
3. vestibular
4. somatosensory
8
Q
Spinocerebellum
vermis: deep nucleus
A
fastigial
9
Q
Spinocerebellum
vermis: principle nucleus
A
medial systems
10
Q
Spinocerebellum
vermis: function
A
1. axial motor control
2. posture
3. locomotion
4. gaze
11
Q
Spinocerebellum
paravermal: principle input
A
spinal afferents
12
Q
Spinocerebellum
paravermal: deep nucleus
A
interposed
13
Q
Spinocerebellum
paravermal: principal destination
A
1. lateral system
2. red nucleus
14
Q
Spinocerebellum
paravermal: function
A
distal motor control
15
Q
cerebrocerebellum: anatomical region
A
lateral hemisphere
beyond paravermal
16
Q
cerebrocerebellum: principal input
A
cortical afferents
17
Q
cerebrocerebellum: deep nucleus
A
dentate
18
Q
cerebrocerebellum: principal distination
A
integration areas
19
Q
cerebrocerebellum: function
A
1. initiation
2. planning
3. timing
20
Q
The normal operation of the cerebellum is to
A
direct planned motor outputs in accordance with expectation (planned in the inferior olive) and actual motor performance (spinal afferents arriving in cerebellum as mossy fibers).
21
Q
motor learning mechanism
A
1. inferior olive detects a discrepancy between the planned movement and actual motor performance
2. it generates APs in the climbing fibers creating an error signal at the Purkinje cell.
3. The signals from the climbing fiber in COMBINATION with signals from the mossy fiber depolarizations
4. result in a weakening of the synapses responsible for those movements.