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Titolo:
DOES THE CEREBELLUM CONTRIBUTE TO COGNITIVE ASPECTS OF SPEECH PRODUCTION - A FUNCTIONAL MAGNETIC-RESONANCE-IMAGING (FMRI) STUDY IN HUMANS
Autore:
ACKERMANN H; WILDGRUBER D; DAUM I; GRODD W;
Indirizzi:
UNIV TUBINGEN,DEPT NEUROBIOL,HOPPE SEYLER STR 3 D-72076 TUBINGEN GERMANY UNIV TUBINGEN,DEPT NEURORADIOL,SECT EXPT MR,CNS D-72076 TUBINGEN GERMANY RUHR UNIV BOCHUM,DEPT CLIN NEUROPSYCHOL D-44780 BOCHUM GERMANY
Titolo Testata:
Neuroscience letters
fascicolo: 2-3, volume: 247, anno: 1998,
pagine: 187 - 190
SICI:
0304-3940(1998)247:2-3<187:DTCCTC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ARM MOVEMENTS; GENERATION; LANGUAGE; EMISSION; ANATOMY; MEMORY; TASKS;
Keywords:
CEREBELLUM; COGNITION; SEMANTICS; SPEECH MOTOR CONTROL; FUNCTIONAL MRI; ATAXIC DYSARTHRIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
H. Ackermann et al., "DOES THE CEREBELLUM CONTRIBUTE TO COGNITIVE ASPECTS OF SPEECH PRODUCTION - A FUNCTIONAL MAGNETIC-RESONANCE-IMAGING (FMRI) STUDY IN HUMANS", Neuroscience letters, 247(2-3), 1998, pp. 187-190

Abstract

Several positron emission tomography (PET) studies suggest a contribution of the lateral aspects of the right cerebellar hemisphere to higher-level (cognitive) aspects of speech production such as controlled verbal response selection. As an alternative, however, 'inner speech', giving rise to subliminal activity of orofacial and laryngeal muscles,might account for the observed activation effects. Eighteen subjects underwent functional magnetic resonance imaging (fMRI) during continuous silent recitation of the names of the months of the year ('automatic speech'). The right cerebellar hemisphere showed a significantly increased hemodynamic response concomitant with, among others, an asymmetric activation pattern towards the left side at the level of the motorstrip. Since highly overlearned word strings, presumably, pose few demands on controlled response selection and since the projections of the right cerebellar hemisphere to the left precentral gyrus participatein motor control, the observed cerebellar activation, thus, seems to be related to the articulatory level of speech production rather than,as suggested by previous PET studies, to cognitive operations. (C) 1998 Elsevier Science Ireland Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 18:12:04