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Titolo:
Crossed effects of muscle vibration on motor-evoked potentials
Autore:
Kossev, A; Siggelkow, S; Kapels, HH; Dengler, R; Rollnik, JD;
Indirizzi:
Hannover Med Sch, Dept Neurol & Clin Neurophysiol, D-30623 Hannover, Germany Hannover Med Sch Hannover Germany D-30623 iol, D-30623 Hannover, Germany Bulgarian Acad Sci, Inst Biophys, BU-1113 Sofia, Bulgaria Bulgarian Acad Sci Sofia Bulgaria BU-1113 ophys, BU-1113 Sofia, Bulgaria
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 3, volume: 112, anno: 2001,
pagine: 453 - 456
SICI:
1388-2457(200103)112:3<453:CEOMVO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC BRAIN-STIMULATION; FACILITATION; RESPONSES; INHIBITION; DEPRESSION; AFFERENTS; HUMANS;
Keywords:
motor-evoked potentials; muscle vibration; transcranial magnetic stimulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Rollnik, JD Hannover Med Sch, Dept Neurol & Clin Neurophysiol, D-30623 Hannover, Germany Hannover Med Sch Hannover Germany D-30623 Hannover, Germany
Citazione:
A. Kossev et al., "Crossed effects of muscle vibration on motor-evoked potentials", CLIN NEU, 112(3), 2001, pp. 453-456

Abstract

Objectives: Muscle vibration (MV) to a forearm muscle augments motor-evoked potentials (MEPs) following transcranial magnetic stimulation (TMS) and the underlying mechanism involves cortical structures. Although MV-induced cortical activation is bilateral, the effects of MV on MEPs in contralateralmuscles have not been investigated. Methods: Low-amplitude MV (80 Hz, amplitude 0.5 mm, duration 4 s), subthreshold for the tonic vibration reflex, was applied to the right extensor carpi radialis muscle (ECR). MEPs were elicited (0.5, 3 and 5 s after MV onset) in the left and right ECR and flexor carpi radialis muscle (FCR) by TMS (120% of threshold at rest) to the left and right hemisphere, respectively. Results: During MV of right ECR the left ECR revealed a slight non-significant augmentation of MEPs. In contrast, the left FCR showed a gradual depression of MEPs with ongoing MV and at 3 s the reduction of MEPs was significant. The time course of MEP changes in left FCR correlated with the facilitation of the vibrated right ECR. Post-vibration MEPs at 1 s after the offset of MV were still significantly decreased. Conclusions: The study demonstrates crossed effects of MV on motor cortex excitability, suggesting transcallosal MEP modulation. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 23:08:51