vestibulocular reflexs

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Vestibulocular reflexs
movement
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• ear

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vistubule
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Vestibular G.
Vestibular part of CN VIII
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• Eye
• movement

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As we knowthe move by action of extra
ocular mm.which supply by CN III , IV VI
(SO4LR6)3
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?

• How to connect

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• Not to internet
• Ear with eye movement

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(No Transcript)
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What is med.
Longitudinal
fasciculus
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Med. Longitudinal fasciculas

• White M.
• In brain stem
• III, IV,VI,VIII

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reflexes

• Types
• Pathway
• Function
• Abnormalities

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types

• Rotational vestibuloocular reflex
• Translational

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Pathway (AE)

• Semicircular canal or utricle and saccule
• Vestibular N. and ganglia
• Vestibular nuclei
• Med. Longitudinal fascicules
• CN III, IV VI
• Extra ocular mm.(contraction relaxation)

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function

• Focus on objects
• Other complicated function related to explain
  vision

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Abnormalites

• Manifest in several different ways, depending on
  the anatomical location of lwsin or lesions
• Location of acceptable sites of lesion (answer it
  please)
• Other causes
• Cerebellar deficits
• Cerebellar atrophy
• Parietal vestibular cortex and ocular gyrus
• Migraines, depression, and anxiety disorder

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Evaluation(3parameters)

• Gain
• Phase
• symmetry

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Impact of Age on the Vestibuloocular Reflex

• In recent years, studying the natural
  maturational and aging effects on the
  vestibulocular reflex (VOR) have been of
  particular interest
• 3 months of age may show
• the age of 9 months, full mature
• the absence of VOR by the age of 10 months may be
  an abnormal finding

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refrences

• clinical neuroanatomy 7th
• Atlas_of_Anatomy_-_Patrick_W._Tank,_Thomas_R._Gest
  _(Malestrom)
• AtlasOfNeuroanatomyAndNeurophysiology-FrankH.Nette
  r
• Medscape wibsite

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Any questions
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Thanks