Event-related desynchronization/synchronization (ERD/ERS) at alpha (10 Hz), beta (20 Hz), and gamma (40 Hz) bands and movement-related potentials (MRPs) were investigated in right-handed subjects who were "free" to decide the side of unilateral finger movements ("fixed" side as a control). As a novelty, this "multi-modal" EEG analysis was combined with the evaluation of involuntary mirror movements, taken as an index of "bimanual competition." A main issue was whether the decision regarding the hand to be moved ("free" movements) could modulate ERD/ERS or MRPs overlying sensorimotor cortical areas typically involved in bimanual tasks. Compared to "fixed" movements, "free" movements induced the following effects: (1) more involuntary mirror movements discarded from EEG analysis; (2) stronger vertex MRPs (right motor acts); (3) a positive correlation between these potentials and the number of involuntary mirror movements; (4) gamma ERS over central areas; and (5) preponderance of postmovement beta ERS over left central area (dominant hemisphere). These results suggest that ERD/ERS and MRPs provide complementary information on the cortical processes belonging to a lateralized motor act. In this context, the results on vertex MRPs would indicate a key role of supplementary/cingulate motor areas not only for bimanual coordination but also for the control of "bimanual competition" and involuntary mirror movements.

Shall I move my right or my left hand? - An EEG study in frequency and time domains / Babiloni, Claudio; Babiloni, Fabio; Carducci, Filippo; Cincotti, Febo; DEL PERCIO, Claudio; Hallett, M; Kelso, Ajs; Moretti, Dv; Liepert, J; Rossini, Pm. - In: JOURNAL OF PSYCHOPHYSIOLOGY. - ISSN 0269-8803. - 17:(2003), pp. 69-86. [10.1027//0269-8803.17.2.69]

Shall I move my right or my left hand? - An EEG study in frequency and time domains

BABILONI, CLAUDIO;BABILONI, Fabio;CARDUCCI, Filippo;CINCOTTI, FEBO;DEL PERCIO, CLAUDIO;
2003

Abstract

Event-related desynchronization/synchronization (ERD/ERS) at alpha (10 Hz), beta (20 Hz), and gamma (40 Hz) bands and movement-related potentials (MRPs) were investigated in right-handed subjects who were "free" to decide the side of unilateral finger movements ("fixed" side as a control). As a novelty, this "multi-modal" EEG analysis was combined with the evaluation of involuntary mirror movements, taken as an index of "bimanual competition." A main issue was whether the decision regarding the hand to be moved ("free" movements) could modulate ERD/ERS or MRPs overlying sensorimotor cortical areas typically involved in bimanual tasks. Compared to "fixed" movements, "free" movements induced the following effects: (1) more involuntary mirror movements discarded from EEG analysis; (2) stronger vertex MRPs (right motor acts); (3) a positive correlation between these potentials and the number of involuntary mirror movements; (4) gamma ERS over central areas; and (5) preponderance of postmovement beta ERS over left central area (dominant hemisphere). These results suggest that ERD/ERS and MRPs provide complementary information on the cortical processes belonging to a lateralized motor act. In this context, the results on vertex MRPs would indicate a key role of supplementary/cingulate motor areas not only for bimanual coordination but also for the control of "bimanual competition" and involuntary mirror movements.
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Shall I move my right or my left hand? - An EEG study in frequency and time domains / Babiloni, Claudio; Babiloni, Fabio; Carducci, Filippo; Cincotti, Febo; DEL PERCIO, Claudio; Hallett, M; Kelso, Ajs; Moretti, Dv; Liepert, J; Rossini, Pm. - In: JOURNAL OF PSYCHOPHYSIOLOGY. - ISSN 0269-8803. - 17:(2003), pp. 69-86. [10.1027//0269-8803.17.2.69]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/361155
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