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

被引：21

作者：

Babiloni, C

Carducci, F

Pizzella, V

Indovina, I

Romani, GL

Rossini, PM

Babiloni, F

机构：

[1] Univ Rome La Sapienza, Ist Fisiol Umana 2, Cattedra Biofis, Sez EEG Ad Alta Risoluz, I-00185 Rome, Italy

[2] CNR, IESS, Rome, Italy

[3] ITAB, Chieti, Italy

[4] Univ G DAnnunzio, Ist Fis Med, Chieti, Italy

[5] IRCCS S Giovanni Dio, Brescia, Italy

[6] Osp FBF Isola Tiberina, Div Neurol, AFaR, CRCCS, Rome, Italy

来源：

BRAIN RESEARCH | 1999年 / 827卷 / 1-2期

关键词：

magnetoencephalography; finger movement; human cerebral cortex; primary sensorimotor cortex (M1-S1); hemispheric functional asymmetry;

D O I：

10.1016/S0006-8993(99)01360-8

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

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. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：234 / 236

页数：3

共 10 条

[1] Sensory feedback contributes to early movement-evoked fields during voluntary finger movements in humans [J].