Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
The effect of finger-movement speed of the dominant and the subdominant hand on cerebellar activation: A functional magnetic resonance imaging study
Autore:
Jancke, L; Specht, K; Mirzazade, S; Peters, M;
Indirizzi:
Univ Magdeburg, Dept Gen Psychol, D-39112 Magdeburg, Germany Univ Magdeburg Magdeburg Germany D-39112 hol, D-39112 Magdeburg, Germany Res Ctr Julich, Inst Med, Julich, Germany Res Ctr Julich Julich GermanyRes Ctr Julich, Inst Med, Julich, Germany Univ Guelph, Dept Psychol, Guelph, ON N1G 2W1, Canada Univ Guelph Guelph ON Canada N1G 2W1 Psychol, Guelph, ON N1G 2W1, Canada
Titolo Testata:
NEUROIMAGE
fascicolo: 5, volume: 9, anno: 1999,
pagine: 497 - 507
SICI:
1053-8119(199905)9:5<497:TEOFSO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; FMRI TIME-SERIES; CEREBRAL ACTIVATION; MOTOR CORTEX; HANDEDNESS; MRI; REPRESENTATION; PERFORMANCE; PET;
Keywords:
fMRI; hand movement; rate effect; handedness; motor control; cerebellum;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Jancke, L Univ Magdeburg, Dept Gen Psychol, D-39112 Magdeburg, Germany Univ Magdeburg Magdeburg Germany D-39112 12 Magdeburg, Germany
Citazione:
L. Jancke et al., "The effect of finger-movement speed of the dominant and the subdominant hand on cerebellar activation: A functional magnetic resonance imaging study", NEUROIMAGE, 9(5), 1999, pp. 497-507

Abstract

We studied the effects of different speeds of unimanual and bimanual movements on functional magnetic resonance signal changes in the cerebellum. Sixhealthy consistently right-handed subjects were scanned at rest and while executing a sequential finger-to-thumb-opposition task either unimanually (left or right hand) or bimanually. Movement frequency was paced by an auditory signal at rates of either 1 or 3 Hz. Significant frequency-dependent blood oxygen level-dependent signal increases were demonstrated ipsilaterallyand contralaterally in the intermediate and lateral portions of the anterior cerebellum for bimanual movements and for unimanual movements with the subdominant hand. There was only a weak frequency-dependent effect for unimanual movements performed with the dominant hand. In addition, signals were stronger on the right intermediate zone of the anterior cerebellum for movements involving the right (dominant) hand while there was stronger activityon the left cerebellar hemisphere for movements involving the left (subdominant) hand. Taken together, these results suggest that rate and movement task effects on cerebellar activation are differentially sensitive to subdominant and dominant hand movements. (C) 1999 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 21:47:48