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Titolo:
Speech perception deficit in dyslexic adults as measured by mismatch negativity (MMN)
Autore:
Schulte-Korne, G; Deimel, W; Bartling, J; Remschmidt, H;
Indirizzi:
Univ Marburg, Dept Child & Adolescent Psychiat & Psychotherapy, D-35039 Marburg, Germany Univ Marburg Marburg Germany D-35039 hotherapy, D-35039 Marburg, Germany
Titolo Testata:
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
fascicolo: 1, volume: 40, anno: 2001,
pagine: 77 - 87
SICI:
0167-8760(200102)40:1<77:SPDIDA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEVELOPMENTAL DYSLEXIA; READING-DISABILITY; CHILDREN; DISCRIMINATION; MEMORY; REPRESENTATIONS; GENERATORS; RESPONSES; STIMULI; HUMANS;
Keywords:
dyslexia; mismatch negativity; speech perception; auditory processing; adults; passive oddball paradigm;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Schulte-Korne, G Univ Marburg, Dept Child & Adolescent Psychiat & Psychotherapy, Hans SachsStr 6, D-35039 Marburg, Germany Univ Marburg Hans Sachs Str 6 Marburg Germany D-35039 ny
Citazione:
G. Schulte-Korne et al., "Speech perception deficit in dyslexic adults as measured by mismatch negativity (MMN)", INT J PSYCP, 40(1), 2001, pp. 77-87

Abstract

Deficits in phonological processing are known to play a major role in the aetiology of dyslexia, and speech perception is a prerequisite condition for phonological processing. Significant group differences between dyslexics and controls have been found in the categorical perception of synthetic speech stimuli. In a previous work, we have demonstrated that these group differences are already present at an early pre-attentive stage of signal processing in dyslexic children: the late component of the MMN elicited by passive speech perception was attenuated in comparison to a control group. In this study, 12 dyslexic adults and 13 controls were assessed using a passive oddball paradigm. Mismatch negativity (MMN) was determined for both tone and speech stimuli. The tone stimuli yielded two MMN components, but no groupdifferences. Three components were found for the speech stimuli. Multivariate testing for group differences yielded a significant result, and univariate P values revealed significant differences between dyslexics and controls in two of the three time windows. This suggests that speech perception asmeasured on an early, pre-attentive level plays a major role in dyslexia not only in children las shown in our previous study) but also in adults. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 14:54:40