Analysis of the effect of neuromuscular electrical stimulation on corticomuscular coupling during standing balance

• Published in: Sheng wu yi xue gong cheng xue za zhi Vol. 41; no. 6; p. 1227
• Main Authors: Ke, Weijie, Luo, Zhizeng
• Format: Journal Article
• Language: Chinese
• Published: China 25.12.2024
• Subjects: Adult; Electric Stimulation; Electroencephalography; Electromyography; Female; Humans; Male; Motor Cortex - physiology; Muscle, Skeletal - physiology; Postural Balance - physiology; Standing Position; Center of pressure; Cortico-muscular coupling; Standing balance; Neuromuscular electrical stimulation
• ISSN: 1001-5515
• DOI: 10.7507/1001-5515.202404032

Neuromuscular electrical stimulation (NMES) has been proven to promote human balance, but research on its impact on motor ability mainly focuses on external physical analysis, with little analysis on the intrinsic neural regulatory mechanisms. This study, for the first time, investigated the effects of NMES on cortical activity and cortico-muscular functional coupling (CMFC) during standing balance. Twelve healthy subjects were recruited in bilateral NMES training, with each session consisting of 60 electrically induced isometric contractions. Electroencephalogram (EEG) signals, electromyogram (EMG) signals, and center of pressure (COP) signals of the foot sole were collected before stimulation, two weeks after stimulation, and four weeks after stimulation while the subjects maintained standing balance. The results showed that NMES training improved subjects' postural stability during standing balance. Additionally, based on the EMG power spectral density (PSD), the κ frequency band was defined, and EEG-EMG t