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.
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页码：234 / 236
页数：3
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