The department has facilities to assess peripheral and central auditory pathways and vestibular system. Infant hearing screening programs have been initiated.
Speech audiometry comprises of tests such as Speech Reception Threshold (SRT), Speech Discrimination Score (SDS), Speech Detection Threshold (SDT), Speech Discrimination in Noise (SDIN) and Performance-Intensity for Phonetically Balanced words (PIPB). SRT and SDT are useful indices for estimating reliability of puretone audiometric thresholds. SDS provides information regarding speech discrimination ability. SDIN and PIPB are reliable tools for differentiating cochlear versus retrocochlear pathology and are very sensitive for auditory nerve lesionsr