Electroencephalogram power spectrum as motor imagery for lower limb amputees
10.3969/j.issn.1006-9771.2022.11.017
- VernacularTitle:下肢截肢患者运动表象的脑电功率谱改变
- Author:
Xinying SHAN
1
;
Mengsun YU
1
Author Information
1. School of Biological Science and Medical Engineering, Beihang University, Beijng 100191, China
- Publication Type:Journal Article
- Keywords:
lower limb amputation;
motor imagery;
electroencephalogram;
power spectrum analysis;
brain plasticity
- From:
Chinese Journal of Rehabilitation Theory and Practice
2022;28(11):1360-1364
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo explore the mechanism of brain plasticity after lower limb amputation, and the electroencephalogram (EEG) energy changes during motor imagery. MethodsFrom April to October, 2021, 21 lower limb amputees and 18 healthy subjects were selected to perform motor imagery task, while the 256-EEG were recorded synchronously. The power spectrum of EEG at C3 and C4 electrodes in α (8~13 Hz) and β (13~30 Hz) frequency bands were compared. ResultsThe power of C4 electrode in β frequency band was stronger in the amputees than in the healthy subjects as imagery of movements of left and right legs, and left foot. ConclusionEEG power increases in the amputees as motor imagery, which may relate to phantom limb pain and brain plasticity after amputation.
