Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Decreased sensory cortical excitability after 1 Hz rTMS over the ipsilateral primary motor cortex
Autore:
Enomoto, H; Ugawa, Y; Hanajima, R; Yuasa, K; Mochizuki, H; Terao, Y; Shiio, Y; Furubayashi, T; Iwata, NK; Kanazawa, I;
Indirizzi:
Univ Tokyo, Grad Sch Med, Div Neurosci, Dept Neurol,Bunkyo Ku, Tokyo 1138655, Japan Univ Tokyo Tokyo Japan 1138655 pt Neurol,Bunkyo Ku, Tokyo 1138655, Japan
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 11, volume: 112, anno: 2001,
pagine: 2154 - 2158
SICI:
1388-2457(200111)112:11<2154:DSCEA1>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSCRANIAL MAGNETIC STIMULATION; SOMATOSENSORY-EVOKED-POTENTIALS; LONG-TERM POTENTIATION; HORIZONTAL CONNECTIONS; PARKINSONS-DISEASE; DEPRESSION; RESPONSES; MODULATION; MOVEMENTS; BRAIN;
Keywords:
sensory cortex; motor cortex; repetitive transcranial magnetic stimulation; sensory evoked potential;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Ugawa, Y Univ Tokyo, Grad Sch Med, Div Neurosci, Dept Neurol,Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138655, Japan Univ Tokyo 7-3-1 Hongo Tokyo Japan 1138655 Tokyo 1138655, Japan
Citazione:
H. Enomoto et al., "Decreased sensory cortical excitability after 1 Hz rTMS over the ipsilateral primary motor cortex", CLIN NEU, 112(11), 2001, pp. 2154-2158

Abstract

Objectives: To study changes in the excitability of the sensory cortex by repetitive transcranial magnetic stimulation (rTMS) in humans. Methods: Somatosensory evoked potentials (SEPs) and antidromic sensory nerve action potentials (SNAPs) were elicited by right median nerve stimulation at the wrist before and after low frequency (I Hz) rTMS over the left motor cortex, lateral premotor cortex, sensory cortex, and also after sham stimulation. The intensity of rTMS was fixed at 1.1 times the active motor threshold at the hand area of motor cortex. Results: N20 peak (N20p)-P25 and P25-N33 amplitudes were suppressed after rTMS over the motor cortex, whereas the N20 onset (N20o)-N20p and SNAP amplitudes were not affected. They recovered to the baseline about 100 min after the rTMS. rTMS over the premotor cortex or sensory cortex or sham stimulation had no suppressive effect on SEPs. Conclusions: The reduction of N20p-P25 and P25-N33 components without any changes of N20o-N20p amplitude suggests that the suppression occurs in the sensory cortex. rTMS (I Hz) of the motor cortex induces a long-lasting suppression of the ipsilateral sensory cortex even at an intensity as low as 1.1 times the active motor threshold. probably via cortico-cortical pathways between motor and sensory cortex. (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 28/01/20 alle ore 03:05:31