Event-Related Beta EEG Changes During Active, Passive Movement and Functional Electrical Stimulation of the Lower Limb

Abstract

A number of electroencephalographic (EEG) studies have reported on event-related desynchronization/synchronization (ERD/ERS) during active movements, passive movements, and the movements induced by functional electrical stimulation (FES). However, the quantitative differences in ERD values and affected frequency bands associated with the lower limb have not been discussed. The goal of this paper was to quantitatively compare the ERD patterns during active movement, passive movement and FES-induced movement of the lower limb. 64-channel EEG signals were recorded to investigate the brain oscillatory patterns during active movement, passive movement and FES-induced movement of the lower limb in twelve healthy subjects. And passive movement and FES-induced movement were also performed in a hemiplegic stroke patient. For healthy subjects, FES-induced movement presented significantly higher characteristic frequency of central beta ERD while there was no significant difference in ERD values compared with active or passive movement. Meanwhile, beta ERD values of FES-induced movement were significantly correlated with those of active movement, and spatial distribution of beta ERD pattern for FES-induced movement was more correlated with that for active movement. In addition, the stroke patient presented central ERD patterns during FES-induced movement, while no ERD with similar frequencies could be found during passive movement. This work implies that the EEG oscillatory pattern under FES-induced movement tends more towards active movement instead of passive movement. The quantification of ERD patterns could be expected as a potential technique to evaluate the brain response during FES-induced movement.

Burst‐modulated wide‐pulse neuromuscular electrical stimulation enhances H‐reflex recruitment in rats

“…Recently, researchers have tried to optimize the stimulation parameters to improve the rehabilitation effect, enhancing the efficiency by using interphase intervals, 27 strengthening the intrinsic foot muscle 40 and inducing neural responses in the sensorimotor area. 41 Unlike other studies, we modulated the pulse waveform of the wide-pulse NMES and explored its effect on the stimulus efficiency of sensory axon activation, and this may provide experimental evidence for optimizing parameters of burst-modulated waveforms to enhance sensory fiber recruitment. Our results show that mWP stimulation on sensory axons exhibited a higher afferent volley (H-reflex) than did WP when the same charge was applied ( Figure 2A).…”

Toward mapping spatiotemporal characteristics of muscle oxygenation in different motor modalities by multichannel near‐infrared spectroscopy

“…35,36 Whether the peripheral neuromuscular system has been influenced by these motor tasks in different ways has seldom been reported. The different brain activities during motor tasks such as active, passive, and imaginary motor task have been investigated and compared widely.…”

“…The different brain activities during motor tasks such as active, passive, and imaginary motor task have been investigated and compared widely. 35,36 Whether the peripheral neuromuscular system has been influenced by these motor tasks in different ways has seldom been reported. 11,37 The results of this study showed exactly in what manner the spatial heterogeneity and temporal kinetics of muscle oxygenation varied during these motor tasks.…”

Interactive control methods for rehabilitation robot

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