<prompt> Caloric test is done forSemicircular canalMaculaSacculeCochlea  <response>: Ans. a Semicircular canalRef. Dhingras ENT 5th ed. 48 Caloric test is used to assess vestibular function. The basis of this test is to induce nystagmus by thermal stimulation of the vestibular system. Done by taking water of 2 temperatures, cold 30degC and hot 44degC. Position of the test: Supine then lift head at 30deg forward or patient sitting with bending backwards 60. This position is used in order to make lateral horizontal SCC in vertical position. Cold water elicits nystagmus in opposite eye and warm water elicit nystagmus in same eye Mn: COWS. Interpretation: Normal: Time taken from start of irrigation to end point of Nystagmus is taken and it is 80 seconds --120 seconds. Canal paresis: Duration of Nystagmus shortened i.e. 80 sec. Indicates depressed function of ipsilateral Labyrinth, vestibular nerve and vestibular nuclei. It is seen in: Menieres disease Acoustic neuroma Vestibular neuritis Vestibular nerve section Postural vertigo 