<prompt> Hallpike test is done forVestibular functionCorneal testCochlear functionAudiometry  <response>: A Vestibular function FITZGERALD-HALLPIKE TEST Bithermal Caloric Test: In this test, patient lies supine with head tilted 30deg forward so that horizontal canal is vertical. Ears are irrigated for 40 seconds alternately with water at 30degC at 44deg C eyes observed for appearance of nystagmus till its end point. In Fitzgerald-Hallpike test patient lies supine with need tilted 30 degree forward so that horizontal canal is vertical. Cold water induces nystagmus to opposite side warm water to the same side COWS. By this test we can find canal paresis or dead labyrinth, directional preponderance. 