Variation in acoustic overstimulation changes tinnitus characteristics

Publication date: 3 December 2015 Source:Neuroscience, Volume 310 Author(s): L. Kiefer, A. Schauen, S. Abendroth, B.H. Gaese, M. Nowotny Tinnitus often occurs after exposure to loud noise. This raises the question of whether repeated exposure to noise increases the risk of developing tinnitus. We thus studied tinnitus development after repeated acoustic overstimulation using startle and auditory brainstem-response techniques applied to Mongolian gerbils. Noise with bandwidths ranging from 0.25 up to 0.5oct were used for repeated acoustic overstimulation. Auditory brainstem response measurements revealed similar threshold shifts in both groups of up to about 30dB directly after the acoustic overstimulation. We identified an upper limit in threshold values, which was independent of th…

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