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Titolo:
Increased synchronization of cortical oscillatory activities between humansupplementary motor and primary sensorimotor areas during voluntary movements
Autore:
Ohara, S; Mima, T; Baba, K; Ikeda, A; Kunieda, T; Matsumoto, R; Yamamoto, J; Matsuhashi, M; Nagamine, T; Hirasawa, K; Hori, T; Mihara, T; Hashimoto, N; Salenius, S; Shibasaki, H;
Indirizzi:
Kyoto Univ, Grad Sch Med, Human Brain Res Ctr, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 n Res Ctr, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ, Grad Sch Med, Dept Neurol, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 pt Neurol, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ, Grad Sch Med, Dept Neurosurg, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 Neurosurg, Sakyo Ku, Kyoto 6068507, Japan Shizuoka Higashi Hosp, Natl Epilepsy Ctr, Shizuoka 4208688, Japan ShizuokaHigashi Hosp Shizuoka Japan 4208688 tr, Shizuoka 4208688, Japan Tokyo Womens Med Univ, Inst Neurobiol, Dept Neurosurg, Shinjuku Ku, Tokyo 1628666, Japan Tokyo Womens Med Univ Tokyo Japan 1628666 njuku Ku, Tokyo 1628666, Japan Helsinki Univ Technol, Low Temp Lab, Brain Res Unit, FIN-02015 Espoo, Finland Helsinki Univ Technol Espoo Finland FIN-02015 , FIN-02015 Espoo, Finland
Titolo Testata:
JOURNAL OF NEUROSCIENCE
fascicolo: 23, volume: 21, anno: 2001,
pagine: 9377 - 9386
SICI:
0270-6474(200112)21:23<9377:ISOCOA>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED COHERENCE; LOCAL-FIELD POTENTIALS; CAT VISUAL-CORTEX; ELECTRICAL-STIMULATION; ISOMETRIC CONTRACTION; FINGER MOVEMENT; MAGNETIC-FIELDS; HUMAN BRAIN; EEG; ORGANIZATION;
Keywords:
event-related coherence; primary sensorimotor area; supplementary motor area; electrocorticography; voluntary movements; functional coupling;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
74
Recensione:
Indirizzi per estratti:
Indirizzo: Shibasaki, H Kyoto Univ, Grad Sch Med, Human Brain Res Ctr, Sakyo Ku, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 kyo Ku, Kyoto 6068507, Japan
Citazione:
S. Ohara et al., "Increased synchronization of cortical oscillatory activities between humansupplementary motor and primary sensorimotor areas during voluntary movements", J NEUROSC, 21(23), 2001, pp. 9377-9386

Abstract

In human, both primary and nonprimary motor areas are involved in the control of voluntary movements. However, the dynamics of functional coupling among different motor areas has not been fully clarified yet. Because it has been proposed that the functional coupling among cortical areas might be achieved by the synchronization of oscillatory activity, we investigated the electrocorticographic coherence between the supplementary motor and primarysensorimotor areas (SMA and S1-M1) by means of event-related partial coherence analysis in 11 intractable epilepsy patients. We found premovement increase of coherence between the SMA proper and S1-M1 at the frequency of 0-33 Hz and between the pre-SMA and S1-M1 at 0-18 Hz. Coherence between the SMA proper and M1 started to increase 0.9 sec before the movement onset and peaked 0.3 sec after the movement. There was no systematic difference withinthe SMA (SMA proper vs pre-SMA) or within the S1-M1, in terms of the time course as well as the peak value of coherence. The phase spectra revealed near-zero phase difference in 57% (20 of 35) of region pairs analyzed, and the remaining pairs showed inconsistent results. This increase of synchronization between multiple motor areas in the preparation and execution of voluntary movements may reflect the multiregional functional interactions in human motor behavior.

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Documento generato il 04/04/20 alle ore 02:26:17