In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 117, No. 4_Supplement ( 2005-04-01), p. 2572-2572
Abstract:
Ability to detect gaps in speech and non-speech stimuli was measured in children, young adults, and older adults with good audiograms. The markers varied in duration (40 vs 250 msec) and in spectral symmetry. In spectrally symmetrical conditions, the leading and lagging markers were the same: the vowel [u] in speech conditions and a 500-Hz tone in non-speech conditions. In asymmetrical speech conditions, the lagging marker was the same as in the symmetrical conditions, but the leading marker was the consonant [s] in the speech conditions and a broadband noise (1 to 6 kHz) in the non-speech conditions. For all groups, gap detection thresholds in spectrally symmetrical markers were far smaller than in spectrally asymmetrical markers. Thresholds were significantly smaller in young adults than in either children or older adults. Gaps between spectrally asymmetrical speech markers were detected better than gaps between analogous non-speech stimuli. It is argued that phonological knowledge compensates for auditory processing difficulties. [Research funded by the International Dyslexia Association, the Natural Sciences and Engineering Research Council of Canada, and the Canadian Institutes of Health Research.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2005
detail.hit.zdb_id:
1461063-2
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