Responses of human primary sensorimotor and supplementary motor areas to internally triggered unilateral and simultaneous bilateral one-digit movements. A high-resolution EEG study

Authors

  • A. Urbano,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • C. Babiloni,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • P. Onorati,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • F. Carducci,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • A. Ambrosini,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • L. Fattorini,

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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  • F. Babiloni

    1. Institute of Human Physiology, Division of High Resolution EEG (CIMS), University of Rome ‘La Sapienza’, P.le A. Moro 5,00185 Rome, Italy
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Prof. Antonio Urbano, Istituto di Fisiologia umana, Universita’ degli Studi di Roma ‘La Sapienza’, P.le Aldo Moro 5, 00185 Rome, Italy. E-mail: babilonif@axrma.uniroma1.it

Abstract

We modelled the responses of human primary sensorimotor areas and supplementary motor area to simple, self-initiated unilateral and simultaneous bilateral middle finger movements using a novel high-resolution electroencephalography technology. The results support the view that these cortical motor areas are involved in parallel and present similar activity in the preparation, initiation, and execution of the contralateral and bilateral movements. Furthermore, the left primary sensorimotor area (dominant hemisphere) appears to be activated more than the right primary sensorimotor area during the preparation and performance of the ipsilateral movements.

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