Envelope frequency following responses are stronger for high-pass than low-pass filtered vowels.
Background: To assess hearing in response to speech, the envelope frequency following response (FFR) can be observed at the fundamental frequency of a vowel stimulus and its harmonics. FFRs are complex non-linear phenomena, which require better understanding for allowing robust inferences on the ass...
| Publicado en: | International Journal of Audiology Vol. 58; no. 6; pp. 355 - 363 |
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| Autores principales: | , , , |
| Formato: | research tables/charts tracings Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jun2019
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=136271049&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 136271049 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Jun2019 vid: 58 iid: 6 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 136271049 136271049 136271049 10.1080/14992027.2018.1562243 136271049 ppf: 355 ppct: 8 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Envelope frequency following responses are stronger for high-pass than low-pass filtered vowels. aug: au: Vanheusden, Frederique J. Chesnaye, Michael A. Simpson, David M. Bell, Steven L. affil: Institute of Sound and Vibration Research, University of Southampton, Southampton, UK sug: subj: Vowels Speech Perception Electrophysiology Hearing Screening Human Male Female Adult Middle Age Electroencephalography Speech Acoustics Funding Source Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Background: To assess hearing in response to speech, the envelope frequency following response (FFR) can be observed at the fundamental frequency of a vowel stimulus and its harmonics. FFRs are complex non-linear phenomena, which require better understanding for allowing robust inferences on the assessment of hearing and hearing aid fitting. Objectives: To evaluate the effect of stimulus bandwidth on FFR detection rates using filtered vowel stimuli with equal sound levels. Design: FFRs were collected whilst presenting repeated vowels (in consonant-vowel-consonant format) filtered into different bandwidths. Eighty stimuli per word were presented at 70 dB SPL LAeq through insert earphones with an inter-stimulus interval of 1 s. Responses were detected using frequency-domain Hotelling's T2 (HT2) tests for individual multiples of the fundamental frequency (F0) and for combinations of F0 multiples. Study sample: A total of 11 native English-speaking subjects with normal hearing thresholds. Results: Average detection rates are highest (69%) with stimuli high-pass filtered >1000 Hz, and significantly lower for low-pass filtered stimuli (40%). Conclusions: High-pass filtered vowels therefore appear to elicit stronger FFRs than low-pass filtered vowels at the same dB SPL LAeq. For testing hearing using band-limited speech, filtering effects (due to hearing loss, hearing aid setting or stimulus choice) on responses must be considered. pubtype: Academic Journal doctype: research tables/charts tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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