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Titolo:
Functional MRI of cortical activations induced by transcranial magnetic stimulation (TMS)
Autore:
Baudewig, J; Siebner, HR; Bestmann, S; Tergau, F; Tings, T; Paulus, W; Frahm, J;
Indirizzi:
Biomed NMR Forsch GmbH, Max Planck Inst Biophys Chem, D-37070 Gottingen, Germany Biomed NMR Forsch GmbH Gottingen Germany D-37070 7070 Gottingen, Germany Univ Gottingen, Abt Klin Neurophysiol, D-37077 Gottingen, Germany Univ Gottingen Gottingen Germany D-37077 iol, D-37077 Gottingen, Germany Natl Hosp Neurol & Neurosurg, Inst Neurol, Sobell Dept Neurophysiol, London WC1N 3BG, England Natl Hosp Neurol & Neurosurg London England WC1N 3BG n WC1N 3BG, England
Titolo Testata:
NEUROREPORT
fascicolo: 16, volume: 12, anno: 2001,
pagine: 3543 - 3548
SICI:
0959-4965(20011116)12:16<3543:FMOCAI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR CORTEX; BRAIN ACTIVATION;
Keywords:
brain function; functional neuroimaging; fMRI; human brain; magnetic resonance imaging; motor cortex; transcranial magnetic stimulation; TMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Frahm, J Biomed NMR Forsch GmbH, Max Planck Inst Biophys Chem, D-37070 Gottingen, Germany Biomed NMR Forsch GmbH Gottingen Germany D-37070 ingen, Germany
Citazione:
J. Baudewig et al., "Functional MRI of cortical activations induced by transcranial magnetic stimulation (TMS)", NEUROREPORT, 12(16), 2001, pp. 3543-3548

Abstract

The effects of repetitive transcranial magnetic stimulation (rTMS) on human brain activity and associated hemodynamics were investigated by blood-oxygenation-level-dependent (BOLD) MRI using echo-planar imaging at 2.0 T. Apart from bilateral activation of the auditory cortex by the audible rTMS discharges (23 bursts, 1 s duration, 10 Hz, 10-20 s interstimulus intervals), BOLD responses were restricted to cortical representations of actual fingermovements performed either voluntarily or evoked by suprathreshold rTMS ofthe motor cortex. Neither subthreshold rTMS of the motor cortex nor suprathreshold rTMS of the lateral premotor cortex induced a detectable BOLD response. These findings suggest that neuronal depolarization as induced by rTMS modulates the spiking output of a brain area but does not automatically alter cerebral blood flow and oxygenation. The observation of BOLD MRI activations probably reflects the afferent intracortical processing of real movements. (C) 2001 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 20:14:19