Bilateral neuromagnetic activation of human primary sensorimotor cortex in preparation and execution of unilateral voluntary finger movements

C Babiloni; F Carducci; V Pizzella; I Indovina; G L Romani; P M Rossini; F Babiloni

doi:10.1016/s0006-8993(99)01360-8

Bilateral neuromagnetic activation of human primary sensorimotor cortex in preparation and execution of unilateral voluntary finger movements

Brain Res. 1999 May 8;827(1-2):234-6. doi: 10.1016/s0006-8993(99)01360-8.

Authors

C Babiloni¹, F Carducci, V Pizzella, I Indovina, G L Romani, P M Rossini, F Babiloni

Affiliation

¹ Istituto di Fisiologia umana -2 Cattedra di Biofisica, Sezione di EEG ad alta risoluzione, Universita' degli Studi di Roma 'La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy. [email protected]

PMID: 10320716
DOI: 10.1016/s0006-8993(99)01360-8

Abstract

Extracranial magnetoencephalographic activity was separately recorded (25 channels) from bilateral primary sensorimotor cortex (M1-S1) of normal right-handers during unilateral finger movements. Standard dipole analysis indicated only a contralateral M1-S1 source for first movement-evoked field (MEF1) peaking at about 115 ms after electromyographic onset. However, the subtraction of the magnetic field generated by this source from the recorded magnetic field disclosed a low-amplitude ipsilateral central-parietal MEF1 that was explained by an ipsilateral M1-S1 source.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Fingers / physiology*
Functional Laterality / physiology
Humans
Magnetoencephalography
Motor Cortex / physiology*
Movement / physiology*
Somatosensory Cortex / physiology*
Volition / physiology*