Categorical speech perception in cerebellar disorders.
Keele and Ivry (1991) considered the cerebellum an 'internal clock' responsible for temporal computations both in the motor and in the perceptual domain. These authors, therefore, expected that the processing of durational parameters of the perceived acoustic speech signal such as voice onset time (...
| Publicado en: | Brain & Language Vol. 60; no. 2; pp. 323 - 332 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Academic Press Inc.
1997 Nov
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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=107293710&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107293710 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0093934X 89A jtl: Brain & Language issn: 0093934X maglogo: N pubinfo: dt: 1997 Nov vid: 60 iid: 2 pid: 735 pub: Academic Press Inc. place: Burlington, Massachusetts artinfo: ui: 107293710 107293710 1998066760 10.1006/brln.1997.1826 NLM9344481 107293710 ppf: 323 ppct: 9 formats: tig: atl: Categorical speech perception in cerebellar disorders. aug: au: Ackermann H Graber S Hertrich I Daum I affil: Department of Neurology, University of Tubingen, Hoppe-Seyler-Strasse 3, D-72076 Tubingen, Germany sug: subj: Cerebellar Diseases Physiopathology Speech Perception Funding Source Computer Terminals Time Factors Audiorecording Case Control Studies Descriptive Statistics Adult Middle Age Aged Male Female Human Adult: 19-44 years Middle Aged: 45-64 years Aged: 65+ years Male Female ab: Keele and Ivry (1991) considered the cerebellum an 'internal clock' responsible for temporal computations both in the motor and in the perceptual domain. These authors, therefore, expected that the processing of durational parameters of the perceived acoustic speech signal such as voice onset time (VOT) depends upon the cerebellum as well. However, a preliminary investigation of Ivry and Gopal (1992) revealed unimpaired phoneme-boundary effects in cerebellar patients along a continuum of monosyllabic stimuli with systematically varied VOT (/ba/-/pa/). Since the energy of the aspiration noise provides additional cues for the discrimination of voiced and voiceless stops, the present study used a series of disyllabic stimuli differing in a purely durational parameter. Both controls and patients with unilateral cerebellar lesion identified the endpoints of this continuum in nearly all instances as the counterparts of a minimal pair (Boten, /bo:tn/, 'messengers' versus Boden, /bo:dn/, 'floor'). Subjects with bilateral pathology of the cerebellum, in contrast, did not show a comparable phoneme-boundary effect. Our data corroborate the hypothesis of the cerebellum as an internal clock and implicate a role of this structure in speech perception. Copyright 1997 Academic Press. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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