Gleich, Otto and Hamann, Ingo and Kittel, Malte C. and Klump, Georg M. and Strutz, Jürgen (2007) Forward masking in gerbils: the effect of age. Hearing research 223 (1-2), pp. 122-128.
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We investigated forward masking in 21 gerbils as a function of age (5-47 months) using 400ms maskers at 40dB SPL and a 20ms, 2.85kHz probe presented 2.5ms after the masker. Elevated thresholds for the unmasked probe were only observed in animals older than 3 years. Unmasked thresholds showed no significant age-dependent hearing loss in animals below 3 years of age. In these animals without peripheral hearing loss, we found a significant age-dependent increase of masker-induced threshold shift. A regression analysis revealed that threshold shift increased from 23dB in 1 year old gerbils to 37dB in 3 year old animals. Increased forward masking in these animals with no sign of peripheral hearing loss points to a central processing deficit.
|Institutions:||Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde|
|Subjects:||500 Science > 570 Life sciences|
500 Science > 590 Zoological sciences
600 Technology > 610 Medical sciences Medicine
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||18 Jun 2009 16:48|
|Last Modified:||05 Aug 2009 15:57|
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