central vestibular projections Flashcards

1
Q

how is vestibular info to CNS

A

vestibulocochlear nerve

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2
Q

central processes travelling in vestibular branch enter where

A

brainstem

pontomedullary junction

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3
Q

vestibular nuclei complex

A

receive from vestibular apparatus

major reflex pathways

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4
Q

vestibular nuclie complex divided into what

A

lateral vand medial vestibular nuclie

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5
Q

wheres vestibular uncle complex located

A

posterior tegmenjtum

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6
Q

lateral vestibular nuclei do what

A

process info from otolith (linear)

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7
Q

medial vestibular nuclei do what

A

process info semicircular (rotational)

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8
Q

vestibular nuclei receive afferent or efferent

A

afferent

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9
Q

why multimodal

A

info from vestibular, cerebellar and visual/somatosensory

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10
Q

T/F vestibular nuclei connect with cerebellar input

A

true

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11
Q

T/F vestibular nuclear on receive info from cerebellum

A

false they give to

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12
Q

vestibulocerebellum

A

parts where cerebellum and vestibular nuclei interconnected

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13
Q

fastigial nuclei

A

vestibular cervical reflex
vestibular spinal reflex
postural stability

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14
Q

flocculus

A

compensentory eye movement

vestibulo ocular reflex

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15
Q

nodulus

A

receive input from vestibular nuclei complex

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16
Q

oculomotor vermis

A

coordinates vestibular, oculomotor and cortical input

17
Q

what contributes to proprioception of personal space

A

vestibular nuclei to cortex

18
Q

vestibular cortical target
where
do what

A

somatosensory area

receive visual / somatosensory info

19
Q

T/F there is single cortical area for input from vestibular

20
Q

projection from vestibular nuclei reach the vestibular cortical target via

21
Q

steps in cortical projections

A

vestibular nuclei (brainstem)

Thalamus (Cross)

Somatosensory (primary and secondary areas)

22
Q

which does conscious perception

cortex or Sc

23
Q

which does vestibular reflex

cortex or Sc

24
Q

vestibular nuclei 3 major reflex

A

vestibulo ocular reflex
vestibucervical reflex
vestibulo spinal

25
vestibulo ocular reflex
head moves, you look forward | adjust eye movement to head, stabilizes image
26
vestibulocervical reflex
postural adjustments of head / neck in response to movement
27
vestibulospinal reflex
postural stability of body with input to mm
28
left head turn what happening in vestibulo ocular reflex
1. semicircular duct detect 2. afferents project to medial vestibular nuclie 3. input to contralateral abducens 4. innervate ipsilateral mm via CNv1 4b. innervate contralateral mm (CNIII)
29
vestibular could reflex rotational?
yes
30
vestibulocervical reflex rotational?
yes
31
vestibulocerival reflex through descending medial or longitundal fascicles
medial
32
steps vestibulocervical reflex
1. semicircular detect 2. project to medial vestibular nuclei 3. travel I medial longitudinal facsciulaus 4. input to cervical levels, head / mm movement
33
vestibulospinal rotiaonal?
rotational and linear
34
vestibuilospinal reflex detected by
semi and otolith
35
vestibulospinal medial or lateral vestibulopsinal tract
both
36
vestibulospinal reflex
rotational steps (same as vestibulocervical) linear steps
37
steps in linear acceleration vestibulospinal reflex
1. otolith detect 2. project to lateral vestibular nuclei 3. travel in lateral vestibulospinal tract 4. input all levels of SC for mm
38
how to detect change in balance reach CNS
vestibular ganglion (semicircular and otolith) to brainstem (cortex n SC) to cerebellum