Dear Vinay – you may find useful the research on using otoacoustic emissions for detecting the early-stages of NIHL and susceptibility to NIHL by Lynne Marshall, Laurie Heller, and myself. A summary and an exhaustive literature review (up to 2007) can be found in Lapsley Miller, J. A., and Marshall, L. (2007). "Otoacoustic emissions as a preclinical measure of NIHL and susceptibility to NIHL," in Otoacoustic Emissions: Clinical Applications, edited by M. S. Robinette, and T. J. Glattke (Thieme, NY), pp. 321-341. Results from 3 longitudinal studies are in: Marshall, L., Lapsley Miller, J. A., Heller, L. M., Wolgemuth, K. S., Hughes, L. M., Smith, S., and Kopke, R. (2009). "Detecting incipient inner-ear damage from impulse noise with otoacoustic emissions," J. Acoust. Soc. Am. 125, 995-1013. Lapsley Miller, J. A., Marshall, L., Heller, L. M., and Hughes, L. M. (2006). "Low-level otoacoustic emissions may predict susceptibility to noise-induced hearing loss," Journal of the Acoustical Society of America 120, 280-296. Lapsley Miller, J. A., Marshall, L., and Heller, L. M. (2004). "A longitudinal study of changes in evoked otoacoustic emissions and pure-tone thresholds as measured in a hearing conservation program," Int. J. Audiol. 43, 307-322. These journal articles, and many others can be downloaded from http://www.sanity-zone.org/pubs/ Kind regards, Judi From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Dr. Vinay Swarnalatha Nagaraj Dear list, I am interested to know the efficient audiological tests/methods that help in the early detection of hearing loss, especially detecting hearing loss that occurs due to noise exposure. These audiological tests should be time economical too. Apart from knowing the audiological tests, I would appreciate if you can let me know the specific test parameters in those tests that help in the early detection. Thanks in advance for any suggestions, Vinay |