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Titolo:
DIRECT AND CROSSED MODULATION OF HUMAN MOTOR CORTEX EXCITABILITY FOLLOWING EXERCISE
Autore:
BONATO C; ZANETTE G; MANGANOTTI P; TINAZZI M; BONGIOVANNI G; POLO A; FIASCHI A;
Indirizzi:
UNIV VERONA,POLICLIN BORGO ROMA,DIPARTIMENTO SCI NEUROL & VIS,SEZ NEUROL,VIA DELLE MENEGONE I-37134 VERONA ITALY UNIV VERONA,POLICLIN BORGO ROMA,DIPARTIMENTO SCI NEUROL & VIS,SEZ NEUROL I-37134 VERONA ITALY
Titolo Testata:
Neuroscience letters
fascicolo: 2, volume: 216, anno: 1996,
pagine: 97 - 100
SICI:
0304-3940(1996)216:2<97:DACMOH>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSCRANIAL MAGNETIC STIMULATION; REORGANIZATION FOLLOWING MOTOR; INTERHEMISPHERIC-TRANSFER; DYNAMIC ORGANIZATION; EVOKED-POTENTIALS; TARGET MUSCLES; NERVE LESIONS; ADULT-RATS; DEPRESSION; OUTPUT;
Keywords:
TRANSCRANIAL MAGNETIC STIMULATION; MOTOR CORTEX; EXERCISE; PLASTICITY; INHIBITION; CORTICAL EXCITABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
C. Bonato et al., "DIRECT AND CROSSED MODULATION OF HUMAN MOTOR CORTEX EXCITABILITY FOLLOWING EXERCISE", Neuroscience letters, 216(2), 1996, pp. 97-100

Abstract

Rapid repetitive movements of the thumb (1 min duration) produce a reversible decrease in the activated primary motor cortex (MI) excitability to transcranial magnetic stimulation (TMS) with recovery within 35-40 min. In the present study we investigated (1) the role of peripheral sensory feedback in inducing such decrease and (2) possible effectsof exercise on the non-activated MI. Stimulation of peripheral Ia afferent fibres, induced by 1 min vibration of thenar muscles and 2 Hz electrical stimulation of the median nerve at the wrist, have no effect on motor evoked potential (MEP) amplitude to TMS suggesting no role for sensory feedback to produce MI excitability modulation. Exercise produces a significant (P < 0.01) decrease of MEPs for homologous non-exercised muscles with concomitant contraction of corresponding motor cortical output maps, suggesting that changes in MI excitability also occur in the nonactivated hemisphere. This 'crossed' effect might relate to an interhemispheric transfer of information, via homotopic connections of the corpus callosum.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 15:12:58