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Neuro exam 3 > cerebellum 3 > Flashcards

cerebellum 3 Flashcards

1
Q

Vestibulocerebellum:

anatomical region

A

Flocculonodular

Lobe

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2
Q

Vestibulocerebellum: principle input

A

vestibular sensory cells

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3
Q

Vestibulocerebellum: deep nucleus

A

vestibular

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4
Q

Vestibulocerebellum: principal destination

A

axial motoneurons

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5
Q

Vestibulocerebellum: function

A
  1. axial control
  2. vestibular reflex
  3. balance
  4. eye movement
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6
Q

Spinocerebellum

vermis: anatomical region

A

vermis

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7
Q

Spinocerebellum

vermis: principal input

A
  1. visual
  2. auditory
  3. vestibular
  4. somatosensory
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8
Q

Spinocerebellum

vermis: deep nucleus

A

fastigial

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9
Q

Spinocerebellum

vermis: principle nucleus

A

medial systems

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10
Q

Spinocerebellum

vermis: function

A
  1. axial motor control
  2. posture
  3. locomotion
  4. gaze
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11
Q

Spinocerebellum

paravermal: principle input

A

spinal afferents

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12
Q

Spinocerebellum

paravermal: deep nucleus

A

interposed

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13
Q

Spinocerebellum

paravermal: principal destination

A
  1. lateral system

2. red nucleus

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14
Q

Spinocerebellum

paravermal: function

A

distal motor control

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15
Q

cerebrocerebellum: anatomical region

A

lateral hemisphere

beyond paravermal

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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.

Neuro exam 3 (38 decks)

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