The Effects of Environmental Noise Exposure on the Perception of Temporal Fine-Structure

* Presenting author
Day / Time: 22.03.2018, 10:40-11:00
Room: Interim 2
Typ: Vortrag (strukturierte Sitzung)
Abstract: This research investigates the influence of urban noise on temporal hearing loss. Current research [e.g. Kujawa and Lieberman, 2009] links the loosening of the synapses that connect the hair cells to the tectorial membrane to “hidden hearing loss”. This term refers to people suffering from difficulty in perceiving complex signals, particularly in the presence of background noise, while performing well in conventional pure tone audiometry tests. This same loosening of the hair cell synapses could also contribute to temporal hearing loss, caused by every day exposure to a noisy environment. Two listening tests were designed to monitor the pure tone and speech perception capabilities of nine younger, normal hearing participants before and after their daily commute to work. Although the results of the auditory threshold before and after exposure to a noisy environment did not differ, the performance of most participants decreased for the speech intelligibility test. This points to the degrading effect of even short over-exposure to environmental noise on the perception of temporal fine-structure. [Kujawa and Lieberman, 2009] Sharon G. Kujawa and M. Charles Lieberman Adding Insult to Injury: Cochlear Nerve Degeneration after “Temporary” Noise-Induced Hearing Loss Journal of Neuroscience 2009, Nov. 11; 29(45): 14077-14085