Event-related beta EEG-changes during passive and attempted foot movements in paraplegic patients

被引:146
作者
Mueller-Putz, Gernot R.
Zimmermann, Doris
Graimann, Bernhard
Nestinger, Kurt
Korisek, Gerd
Pfurtscheller, Gert
机构
[1] Graz Univ Technol, Lab Brain Comp Interfaces, Inst Knowledge Discovery, A-8010 Graz, Austria
[2] Rehabil Clin Tobelbad, A-8144 Tobelbad, Austria
关键词
electroencephalogram (EEG); event related (de-)synchronization (ERD/S); passive/attempted movement; spinal cord injury (SCI); paraplegic patients;
D O I
10.1016/j.brainres.2006.12.052
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
A number of electroencephalographic (EEG) studies report on motor event-related desynchronization and synchronization (ERD/ERS) in the beta band, i.e. a decrease and increase of spectral amplitudes of central beta rhythms in the range from 13 to 35 Hz. Following an ERD that occurs shortly before and during the movement, bursts of beta oscillations (beta ERS) appear within a 1-s interval after movement offset. Such a post-movement beta ERS has been reported after voluntary hand movements, passive movements, movement imagination, and also after movements induced by functional electrical stimulation. The present study compares ERD/ERS patterns in paraplegic patients (suffering from a complete spinal cord injury) and healthy subjects during attempted (active) and passive foot movements. The aim of this work is to address the question, whether patients do have the same focal beta ERD/ERS pattern during attempted foot movement as healthy subjects do. The results showed midcentral-focused beta ERD/ERS patterns during passive, active, and imagined foot movements in healthy subjects. This is in contrast to a diffuse and broad distributed ERD/ERS pattern during attempted foot movements in patients. Only one patient showed a similar ERD/ERS pattern. Furthermore, no significant ERD/ERS patterns during passive foot movement in the group of the paraplegics could be found. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:84 / 91
页数:8
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