Coupled with the patient’s case history and physical examination, the audiological test battery is composed of two major categories including auditory and vestibular evaluation. Audiovestibular studies examine hearing and balance. Both the auditory and vestibular sensory organs are located in the inner ear and this means that defects of one organ may affect the other; hence it is often necessary to assess both systems.
To assess the auditory system (hearing), several tests can be performed to assess the integrity of the outer, middle and inner ear, and the nerves which conduct the sounds to the brain as electrical signals. The auditory tests are composed of behavioral or psychophysical techniques include pure-tone, speech audiometry, and objective tests or physiologic responses include immittance studies, otoacoustic emissions, and auditory evoked potentials.
The vestibular tests can be performed to detect and diagnose disorders of the peripheral and central vestibular function, which can cause vertigo, imbalance, and dizziness.
Audiovestibular tests available at audiology department of social welfare and Rehabilitation Sciences University include, but are not limited to:
·Otoscopy examination and cerumen management
·Pure tone Audiometry
·Tympanometry and Acoustic Reflex Measurements
·Otoacoustic emission studies including SOAE, TEOAE, DPOAE and contralateral suppression of OAE
·Auditory evoked potentials such as cABR, sABR, EChocG, CHAMP, ASSR, and ERPs
·Vestibular Evoked Myogenic Potentials (VEMP)
·Videonystagmography, VHIT, SVV, and SVH
·Central auditory processing evaluation
·Tinnitus and hyperacusis evaluation and counseling
·Interpretation, recommendation and reporting of the results and designing audiological management programs when necessary along with considering referrals to other professions