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  • Title: Frequency selectivity and temporal resolution in patients with various inner ear disorders.
    Author: Schorn K, Zwicker E.
    Journal: Audiology; 1990; 29(1):8-20. PubMed ID: 2310355.
    Abstract:
    Both frequency selectivity and temporal resolution were examined in patients with various inner ear disorders. These included noise-induced hearing loss (n = 24), Menière's disease (n = 16), sudden deafness (n = 25), toxic inner ear damage (n = 14), presbyacusis (n = 38) and degenerative progressive inner ear hearing loss (n = 8). To facilitate quantitative comparison, various factors were introduced, namely, frequency resolution factor (FRF), temporal resolution factor (TRF) and a combined resolution factor (FTRF). The FRF of normal-hearing subjects in background noise conditions was found to be approximately 20% less than in comparative test conditions without noise, whereas the TRF of normal-hearing persons tested under background noise conditions showed a remarkable increase (factor 3). The frequency resolution performance and/or the temporal resolution performance were found to be impaired in all patient groups with inner ear hearing loss. This is particularly noticeable for temporal resolution in test conditions involving the addition of background noise. It can be concluded that in such cases, speech discrimination can be seriously jeopardized.
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