Exploring high-density corticomuscular networks after stroke to enable a hybrid Brain-Computer Interface for hand motor rehabilitation

Journal of NeuroEngineering and Rehabilitation

Research

Matteo Lorusso¹  Federica Tamburella¹  Floriana Pichiorri²  Donatella Mattia²  Emma Colamarino³  Valeria de Seta³  Jlenia Toppi³  Febo Cincotti³  Marcella Masciullo⁴ 

[1] Laboratory of Robotic Neurorehabilitation (NeuroRobot Lab), Neurorehabilitation 1 Department, IRCCS Fondazione Santa Lucia, Rome, Italy;Neuroelectrical Imaging and Brain Computer Interface Lab, IRCCS Fondazione Santa Lucia, Via Ardeatina, 306, 00179, Rome, Italy;Neuroelectrical Imaging and Brain Computer Interface Lab, IRCCS Fondazione Santa Lucia, Via Ardeatina, 306, 00179, Rome, Italy;Dept. of Computer, Control and Management Engineering, Sapienza University of Rome, Rome, Italy;Neurology and Neurovascular Treatment Unit, Belcolle Hospital, Viterbo, Italy;

关键词: Brain computer interface;    EEG;    EMG;    Corticomuscolar coherence;    Stroke;    Graph theory;    Neurorehabilitation;    Upper limb;    Hand motor task;   

DOI  :  10.1186/s12984-023-01127-6

 received in 2022-08-02, accepted in 2023-01-07,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundBrain-Computer Interfaces (BCI) promote upper limb recovery in stroke patients reinforcing motor related brain activity (from electroencephalogaphy, EEG). Hybrid BCIs which include peripheral signals (electromyography, EMG) as control features could be employed to monitor post-stroke motor abnormalities. To ground the use of corticomuscular coherence (CMC) as a hybrid feature for a rehabilitative BCI, we analyzed high-density CMC networks (derived from multiple EEG and EMG channels) and their relation with upper limb motor deficit by comparing data from stroke patients with healthy participants during simple hand tasks.MethodsEEG (61 sensors) and EMG (8 muscles per arm) were simultaneously recorded from 12 stroke (EXP) and 12 healthy participants (CTRL) during simple hand movements performed with right/left (CTRL) and unaffected/affected hand (EXP, UH/AH). CMC networks were estimated for each movement and their properties were analyzed by means of indices derived ad-hoc from graph theory and compared among groups.ResultsBetween-group analysis showed that CMC weight of the whole brain network was significantly reduced in patients during AH movements. The network density was increased especially for those connections entailing bilateral non-target muscles. Such reduced muscle-specificity observed in patients was confirmed by muscle degree index (connections per muscle) which indicated a connections’ distribution among non-target and contralateral muscles and revealed a higher involvement of proximal muscles in patients. CMC network properties correlated with upper-limb motor impairment as assessed by Fugl-Meyer Assessment and Manual Muscle Test in patients.ConclusionsHigh-density CMC networks can capture motor abnormalities in stroke patients during simple hand movements. Correlations with upper limb motor impairment support their use in a BCI-based rehabilitative approach.

【 授权许可】

CC BY   
© The Author(s) 2023

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