下肢截肢患者运动表象的脑电功率谱改变

doi:10.3969/j.issn.1006-9771.2022.11.017

Abstract

Abstract:

Objective To explore the mechanism of brain plasticity after lower limb amputation, and the electroencephalogram (EEG) energy changes during motor imagery.

Methods From 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.

Results The 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.

Conclusion EEG power increases in the amputees as motor imagery, which may relate to phantom limb pain and brain plasticity after amputation.

Key words: lower limb amputation, motor imagery, electroencephalogram, power spectrum analysis, brain plasticity

CLC Number:

R496

SHAN Xinying,YU Mengsun. Electroencephalogram power spectrum as motor imagery for lower limb amputees[J]. 《Chinese Journal of Rehabilitation Theory and Practice》, 2022, 28(11): 1360-1364.

Figures/Tables 3

References 37

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特征	n	性别(男/女)/n	年龄/岁	受教育程度/年	截肢时间/月	幻肢痛评分
对照组	18	16/2	46.00±10.14	8.83±0.71
左下肢截肢	11	10/1	56.45±7.57	8.73±0.47	13.55±7.86	2.09±1.70
右下肢截肢	10	9/1	48.80±14.70	8.60±0.70	17.00±13.75	1.80±1.23
χ²/F/t值		0.031	3.077	0.423	-0.715	0.445
P值		0.985	0.058	0.659	0.483	0.661

电极	表象部位	对照组(n = 18)	左下肢截肢(n = 11)	右下肢截肢(n = 10)	F值	P值
C3	左腿	0.046±0.023	0.044±0.030	0.060±0.028	1.646	0.207
C3	右腿	0.046±0.025	0.047±0.012	0.058±0.025	1.000	0.378
	左脚	0.081±0.045	0.090±0.033	0.104±0.050	0.921	0.407
	右脚	0.086±0.047	0.090±0.039	0.106±0.051	0.615	0.546
C4	左腿	0.046±0.030	0.046±0.016	0.059±0.029	0.953	0.395
C4	右腿	0.046±0.032	0.048±0.017	0.059±0.027	0.713	0.497
	左脚	0.074±0.042	0.074±0.018	0.100±0.047	1.766	0.185
	右脚	0.076±0.037	0.077±0.016	0.101±0.044	1.929	0.160

电极	表象部位	对照组(n = 18)	左下肢截肢(n = 11)	右下肢截肢(n = 10)	F值	P值
C3	左腿	0.024±0.085	0.033±0.024	0.040±0.023	2.626	0.086
C3	右腿	0.024±0.078	0.035±0.029	0.039±0.022	2.075	0.140
	左脚	0.041±0.016	0.066±0.081	0.074±0.057	1.550	0.226
	右脚	0.042±0.015	0.063±0.078	0.070±0.045	1.299	0.285
C4	左腿	0.022±0.087	0.030±0.015	0.036±0.012	4.328	0.021
C4	右腿	0.023±0.009	0.031±0.017	0.035±0.011	3.620	0.037
	左脚	0.036±0.012	0.054±0.041	0.061±0.015	3.771	0.033
	右脚	0.039±0.013	0.052±0.038	0.059±0.015	2.763	0.077

Electroencephalogram power spectrum as motor imagery for lower limb amputees

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