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Neuroscience 2 > Vision, auditory, vestibular systems > Flashcards

Vision, auditory, vestibular systems Flashcards

1
Q

calcarine fissure

A

above the fissure - upper quadrants of vision the more rostral are farther out from center

below the fissure - lower quadrants of vision the more rostral the farther out from center

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2
Q

optic nerve lesion

A

ipsi blindness

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3
Q

optic chiasm compression

A

binasal hemianopia

temporal cords cut

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4
Q

midsagittal transection of optic chiasm

A

bitemporal hemianopia

nasal cords cut

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5
Q

optic tract left

A

right hemianopia

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6
Q

optic radiation most lateral in picture

A

right upper quadrantanopia

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7
Q

optic radiation medial ones in picture

A

right lower quandrantanopia

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8
Q

optic radiations both divisions

A

right hemianopia with macular sparing

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9
Q

saccades

A

fastest mvmt lose focus while switching between objects

voluntary

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10
Q

smooth pursuit

A

can be voluntary and involuntary

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11
Q

external ear

A

auricle
external auditory canal
eardrum

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12
Q

middle ear

A

auditory ossicles
oval window
round window
tensor tympani and stapedius muscles

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13
Q

inner ear

A

bony and membranous labyrinth
auditory apparatus
vestibulocochlear nerve CN8

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14
Q

spiral organ of corti

A

sensory receptor of hearing

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15
Q

stereocilia

A

hair cells for hearing

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16
Q

Fx of vestibular system

A

stabilize visual image
postural stability
spatial orientation

17
Q

bony labryinth

A

perilymphatic fluid plus supportive connective tissue

18
Q

Otolith organs

A

utricle

saccule

19
Q

utricle

A

horizontal plane

20
Q

saccule

A

vertical plane

21
Q

hair cells are encased in

A

gelatinous layer

22
Q

otoconia

A

calcium carb crystals on top of the gelatinous layers

23
Q

ampulla

A

bulbous formation at the start or finish of each canal

24
Q

Vestibular nu. Lat nu

A

outputs to the cerebellum and lateral vestibulospinal tract

to facilitate extensors trunk and legs

25
Q

Vestibular nu. medial nu

A

descending output to muscles of head and neck via MLF

26
Q

Vestibular nu. superior nu

A

ascending output via MLF to CN3, 4, and 6 VOR

27
Q

Vestibular nu. inferior nu

A

outputs to the cerebellum to the reticular formation and to CN3,4,6 VOR

28
Q

Vestibular Cortex PIVC

A

Jx of parietal and insular cortex

receives input from cerebellum and vestibular nuclei via the thalamus

29
Q

Vestibular cortex Temporal region

A

visuo-vestibular integration

self-motion preception

30
Q

ventral intraparietal region

A

multisensory spatial coding
proprioceptive, auditory, visual, tactile, vestibular

Heteromodal

31
Q

Vestibulo cerebellum

A

responsible for postural gaze stabilization

Mod VOR

Neuroscience 2 (7 decks)

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