PGI FACULTY Develop A Non-Invasive Technique To Measure Auditory Responses

By 121 News Reporter

Chandigarh 31^st March:-- Dr. Dharam Vir, Faculty (Speech and Hearing) presented a paper “TIME DOMAIN OF REVERSALS IN AUDITORY BRAINSTEM RESPONSES” at the International Congress of Clinical Neurophysiology (ICCN) - and International Federation of Clinical Neurophysiology (IFCN)-2014 at Berlin. He has also become the third member of India in the ICNS or Indian Clinical Neurophysiology of Society in this conference. This study has developed the technique that we can observe the Cochlear Microphonics with the help of BERA only and there is no requirement to use Invasive technique i.e. Electro-Cochleography or ECochg. In this study the team comprised Dr N.K. Panda, Dharam Vir, Puneet Sharma and Silky Luthra. The terms auditory neuropathy (AN)/ dys-synchrony and auditory dys-synchrony (AD) have been used to describe a form of hearing impairment in which Outer Hair Cell (OHC) function is normal but afferent neural conduction in the auditory pathway is disordered (Starr et al., 1996; Berlin et al., 2001). In ears with auditory neuropathy/dys-synchrony, auditory brainstem responses are absent (or grossly abnormal) at maximum stimulus presentation levels regardless of behavioural hearing level (Starr et al., 1996; Rance et al., 1999; Sininger and Oba, 2001). In such cases, disruption of the auditory brainstem response is thought to be the result of either a reduction in the number of neural elements available to contribute to the response, or a disruption in the temporal integrity of the neural signal.