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Titolo:
Modulation of corticospinal excitability during imagined knee movements
Autore:
Tremblay, F; Tremblay, LE; Colcer, DE;
Indirizzi:
Univ Ottawa, Fac Hlth Sci, Sch Rehabil Sci, Physiotherapy Programme, Ottawa, ON K1H 8M5, Canada Univ Ottawa Ottawa ON Canada K1H 8M5 rogramme, Ottawa, ON K1H 8M5, Canada
Titolo Testata:
JOURNAL OF REHABILITATION MEDICINE
fascicolo: 5, volume: 33, anno: 2001,
pagine: 230 - 234
SICI:
1650-1977(200109)33:5<230:MOCEDI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN MOTOR CORTEX; H-REFLEX; IMAGERY; ACTIVATION; STIMULATION; SIMULATION;
Keywords:
transcranial magnetic stimulation; motor imagery; motor evoked potentials; quadriceps; knee;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Tremblay, F Univ Ottawa, Fac Hlth Sci, Sch Rehabil Sci, Physiotherapy Programme, Ottawa, ON K1H 8M5, Canada Univ Ottawa Ottawa ON Canada K1H 8M5 tawa, ON K1H 8M5, Canada
Citazione:
F. Tremblay et al., "Modulation of corticospinal excitability during imagined knee movements", J REHAB MED, 33(5), 2001, pp. 230-234

Abstract

In this study, we investigated corticospinal excitability during mental simulation of a leg extension movement with the technique of transcranial magnetic stimulation. Motor evoked potentials were recorded in both knee extensors (quadriceps) and flexors (biceps femoris) in 19 trained participants (healthy volunteers). The amplitude and latency of motor evoked potentials were compared in three conditions: (1) at rest, (2) during motor imagery, and (3) at rest, immediately after motor imagery. The results showed a significant effect (p < 0.001) of conditions on motor evoked potentials amplitudein the quadriceps but not in the biceps femoris. During motor imagery, thesize of motor evoked potentials in the quadriceps increased significantly (p < 0.001) compared with rest and post-imagery conditions. Changes in motor evoked potentials latency across conditions were not significant, however. These results are consistent with previous studies in the upper limb and suggest that corticospinal excitability can be enhanced during motor imagery to facilitate responses in specific lower limb muscles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 12:10:18