Gleich, Otto and Kittel, Malte C. and Kiump, Georg M. and Strutz, Juergen (2007) Temporal integration in the gerbil: The effects of age, hearing loss and temporally unmodulated and modulated speech-like masker noises. HEARING RESEARCH, 224 (1-2). pp. 101-114. ISSN 0378-5955, 1878-5891
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We characterized temporal integration for 2 kHz pure tones with durations between 10 and 1000 ms in young, normal hearing old and old gerbils with a small hearing loss. Thresholds determined in silence increased for durations below 300 ms and were on average more than 10 dB higher for the 10 ms signal than asymptotic thresholds for the long signals. The amount of temporal integration tended to be less in gerbils with hearing loss. Threshold determination was repeated in the same individuals in the presence of speech-like unmodulated and modulated masking noises. Threshold shift due to the maskers was inversely related to the threshold in silence resulting in a reduced inter-individual variability of thresholds in both masking conditions. Thresholds differed systematically between both masker types in a duration dependent fashion. For long signal durations (300 and 1000 ms) thresholds were on average 2 dB lower and for the 10 ms signal 1.9 dB higher in the presence of the modulated masker. These differences in threshold obtained with the two maskers were significant. One hypothesis is that long signals can be detected in the troughs of the modulated masker, while peaks interfere with the detection of short signals. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AUDITORY-NERVE FIBERS; COMODULATION MASKING RELEASE; SIGNAL DURATION; GUINEA-PIG; MERIONES-UNGUICULATUS; MONGOLIAN GERBIL; COCHLEAR NUCLEUS; PURE-TONES; CAT; THRESHOLDS; presbyacusis; psychoacoustic testing; psychometric function; simultaneous masking; response latency; comodulation masking release |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Dec 2020 12:08 |
| Last Modified: | 22 Dec 2020 12:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33228 |
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