Which of following can differentiate between vestibular system dysfunction from cochlear nerve lesion –
Correct Answer: All
Description: Ans. is 'd' i.e., AllVestibular systemo The vestibular system contributes to balance and to the sense of spatial orientation. It is a sensory system that provides the leading contribution about movement and sense of balance. It includes the labyrinth (semicircular canals and otolith: utric le & sacules) of the inner ear and is situated in the vestibuluin in the inner ear. The symptoms of vestibular dysfunction are vertigo, dizziness and imbalance. There are several tests of vestibular functionClinical testsLaboratory testo Spontaneous nystagmuso Caloric test* Cold calorie test with ice cold water (modified Kobrak's test )* Fitzgerald - HaUpike test (Bithermai caloric test)* Cold-air caloric test by Dundas - Grant method. Done in case of perforation of tympanic membrane.o Fistula testo Romberg testo Gaito Past- pointing and fallingo HaUpike manaeuvero Electronystagmography(Positional test)o Optokinetic test o Rotation test o Galvanic test o Posturography
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