Constraints on Sensitivity to Auditory Modulation in the Perceptual Organization of Speech.
Background/Study Context: The perception of speech requires the integration of sensory details from a rapidly fading trace of a time-varying spectrum. This effortful cognitive function has been difficult to assess. New tests measuring intelligibility of sine-wave replicas of speech provided an assay...
| Publicado en: | Experimental Aging Research Vol. 42; no. 1; pp. 4 - 18 |
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| Autores principales: | , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jan/Feb2016
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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=111871275&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 111871275 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0361073X 1HO jtl: Experimental Aging Research issn: 0361073X maglogo: N pubinfo: dt: Jan/Feb2016 vid: 42 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 111871275 111871275 111871275 10.1080/0361073X.2016.1108741 111871275 ppf: 4 ppct: 14 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Constraints on Sensitivity to Auditory Modulation in the Perceptual Organization of Speech. aug: au: Remez, Robert E. Thomas, Emily F. Wycoff, Andrea M. Giglio, Rebecca E. Crank, Aislinn T. Cheimets, Chloe B. Koinis, Stavroula M. affil: Department of Psychology and Program in Neuroscience & Behavior, Barnard College, Columbia University, New York, New York, USA sug: subj: Speech Perception Evaluation Hearing Evaluation Language Processing Psychoacoustics Human Male Female Adolescence Young Adult Adult Time Factors Aging Adolescent: 13-18 years Adult: 19-44 years Male Female ab: Background/Study Context: The perception of speech requires the integration of sensory details from a rapidly fading trace of a time-varying spectrum. This effortful cognitive function has been difficult to assess. New tests measuring intelligibility of sine-wave replicas of speech provided an assay of this critical function in normal-hearing young adults. Methods: Four time-varying sinusoids replicated the frequency and amplitude variation of the natural resonances of spoken sentences. The temporal tolerance of perceptual integration of speech was measured by determining the effect on intelligibility of desynchronizing a single sine-wave component in each sentence. This method was applied in tests in which the sentences were temporally compressed or expanded over a 40% range. Results: Desynchrony was harmful to perceptual integration over a narrow temporal range, indicating that modulation sensitivity is keyed to a rate of 20 Hz. No effect of variation in speech rate was observed on the intelligibility measure, whether rate was accelerated or decelerated relative to the natural rate. Conclusion: Performance measures of desynchrony tolerance did not vary when speech rate was accelerated or decelerated, revealing constraints on integration that are arguably primitive, sensory, auditory, and fixed. Because these are not adaptable, they limit the potential for perceptual learning in this aspect of perceptual organization. Implications for describing the elderly listener are noted. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Unknown language: English refInfo: holdings: @attributes: islocal: N |
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