| Gap detection in school-age children and adults: Effects of inherent envelope modulation and the availability of cues across frequency. | |
MedLine Citation:
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PMID: 24686553 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE The present study evaluated the effects of inherent envelope modulation and the availability of cues across frequency on behavioral gap detection with noise-band stimuli in school-age children. METHODS Listeners were normal-hearing adults and 5.2- to 15.6-year-olds. Stimuli were continuous bands of noise centered on 2000 Hz, either 1000 or 25 Hz wide. In addition to Gaussian noise at these bandwidths, there were conditions using 25-Hz-wide noise bands modified to either accentuate or minimize inherent envelope modulation (staccato and low-fluctuation noise, respectively). RESULTS Within the 25-Hz-wide conditions, adults' gap detection thresholds were highest in the staccato, lower in the Gaussian, and lowest in the low-fluctuation noise. Similar trends were evident in children's thresholds, although inherent envelope modulation had a smaller effect on children than adults. Whereas adults' thresholds were comparable for the 1000-Hz-wide Gaussian and 25-Hz-wide low-fluctuation stimulus, children's performance converged on adults' at a younger age for the 1000-Hz-wide Gaussian stimulus. CONCLUSIONS Results are consistent with the idea that children are less susceptible to the disruptive effects of inherent envelope modulation than adults when detecting a gap in a narrowband noise. Further, the ability to use spectrally distributed gap detection cues appears to mature relatively early in childhood. |
Authors:
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Emily Buss; Joseph W Hall; Heather Porter; John H Grose |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2014-2-1 |
Journal Detail:
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Title: Journal of speech, language, and hearing research : JSLHR Volume: - ISSN: 1558-9102 ISO Abbreviation: J. Speech Lang. Hear. Res. Publication Date: 2014 Feb |
Date Detail:
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Created Date: 2014-4-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9705610 Medline TA: J Speech Lang Hear Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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