Interference and enhancement effects on interaural time discrimination and level discrimination in listeners with normal hearing and those with hearing loss.
It is known that many listeners with sensorineural hearing loss (SNHL) have difficulty performing binaural tasks. In this study, interference and enhancement effects on interaural time discrimination and level discrimination were investigated in 4 listeners with normal hearing (NH) and 7 listeners w...
| Publicado en: | American Journal of Audiology Vol. 13; no. 1; pp. 80 - 96 |
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| Autores principales: | , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
American Speech-Language-Hearing Association
Jun2004
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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=106610957&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106610957 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10590889 5KS jtl: American Journal of Audiology issn: 10590889 maglogo: N pubinfo: dt: Jun2004 vid: 13 iid: 1 pid: 42 pub: American Speech-Language-Hearing Association place: Rockville, Maryland artinfo: ui: 106610957 2005071976 10.1044/1059-0889(2004/011) NLM15248807 106610957 ppf: 80 ppct: 16 formats: fmt: @attributes: type: P tig: atl: Interference and enhancement effects on interaural time discrimination and level discrimination in listeners with normal hearing and those with hearing loss. aug: au: Smith-Olinde L Besing J affil: University of Arkansas at Little Rock -- Speech 120, 2801 South University, Little Rock, AR 72204; SmithOlindeLauraK@uams.edu sug: subj: Auditory Perception Hearing Hearing Loss, Sensorineural Adult Aged Case Control Studies Dichotic Listening Tests Funding Source Middle Age Noise One-Tailed Test Regression T-Tests Two-Tailed Test Human Adult: 19-44 years Aged: 65+ years Middle Aged: 45-64 years ab: It is known that many listeners with sensorineural hearing loss (SNHL) have difficulty performing binaural tasks. In this study, interference and enhancement effects on interaural time discrimination and level discrimination were investigated in 4 listeners with normal hearing (NH) and 7 listeners with SNHL. Just-noticeable differences were measured using 1/3-octave narrowband noises centered at 0.5 and 4 kHz. Noises were presented in isolation and together at equivalent sound pressure level (EqSPL) and equivalent sensation level (EqSL). Each noise served as target and distractor in the dual-band conditions. Congruent conditions included interaural differences in both noises that varied together, and incongruent conditions included an interaural difference in one noise with the second noise diotic. No significant enhancement effects were observed for either group in either task. Interference effects for the NH group were limited to the interaural level discrimination task in the 0.5-kHz target and 4-kHz distractor condition. Performance of participants with SNHL was similar to that of the NH group for interaural time discrimination with noises at EqSL but not EqSPL. In interaural level discrimination, listeners with SNHL demonstrated interference with a 4-kHz target and 0.5-kHz distractor. Results indicated that the relative levels of low- and high-frequency targets and distractors could affect binaural performance of individuals with SNHL but that in some conditions listeners with SNHL performed similarly to those with normal hearing. Implications of these results for binaural clinical tests and hearing aid fitting strategies are discussed. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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