Modulation Detection Interference for Asynchronous Presentation of Masker and Target in Listeners With Normal and Impaired Hearing
| Autor: | Jan Koopman, Tammo Houtgast, Wouter A. Dreschler |
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| Přispěvatelé: | Otolaryngology / Head & Neck Surgery, EMGO - Quality of care, APH - Amsterdam Public Health, Ear, Nose and Throat, Otorhinolaryngology and Head and Neck Surgery |
| Rok vydání: | 2008 |
| Předmět: |
Male
Linguistics and Language medicine.medical_specialty Signal Detection Psychological Time Factors Speech perception Hearing Loss Sensorineural Perceptual Masking Audiology Interference (wave propagation) Sensitivity and Specificity Severity of Illness Index Language and Linguistics Amplitude modulation Speech and Hearing Hearing Modulation (music) medicine Humans Aged Physics Middle Aged medicine.disease Amplitude Speech Perception Female Sensorineural hearing loss Sensitivity (electronics) |
| Zdroj: | Koopman, J, Houtgast, T & Dreschler, W A 2008, ' Modulation detection interference for asynchronous presentation of masker and target in listeners with normal and impaired hearing ', Journal of Speech, Language and Hearing Research, vol. 51, no. 6, pp. 1588-1598 . https://doi.org/10.1044/1092-4388(2008/07-0075) Journal of Speech, Language and Hearing Research, 51(6), 1588-1598. American Speech-Language-Hearing Association (ASHA) Journal of speech, language, and hearing research, 51(6), 1588-1598. American Speech-Language-Hearing Association (ASHA) Journal of Speech Language and Hearing Research, 51(6), 1588-1598. American Speech-Language-Hearing Association (ASHA) |
| ISSN: | 1092-4388 |
| DOI: | 10.1044/1092-4388(2008/07-0075) |
| Popis: | Purpose The sensitivity to sinusoidal amplitude modulations (SAMs) is reduced when other modulated maskers are presented simultaneously at a distant frequency (also referred to as modulation detection interference [MDI]). This article describes the results of onset differences between masker and target as a parameter. Method Carrier frequencies were 1 kHz (target: 625 ms, 8 Hz SAM) and 2 kHz (masker: 625 ms, 8 Hz SAM; modulation depth = 1) presented at 25 dB SL for listeners with impaired hearing ( n = 8) and at 25 dB SL and 50 dB SL for listeners with normal hearing ( n = 6). Masker was delayed by 0, 125, 250, 500, 625, or 750 ms relative to the target. Results Sensitivity to SAMs was reduced in both groups by a modulated masker simultaneous presentation. Reducing the temporal overlap (i.e., increasing the onset delay between masker and target) increased the sensitivity to SAMs in the presence of modulated maskers. Conclusion The gradual reduction in MDI with increasing asynchrony between masker and target suggests that MDI is not solely related to perceptual grouping. Reduced sensitivity to SAMs due to prior stimulation with SAM stimuli (forward masking), and deficits in across-channel integration, are other factors that may play a role. |
| Databáze: | OpenAIRE |
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