Hebbian plasticity induced by temporally coincident BCI enhances post-stroke motor recovery.
Sci Rep
; 14(1): 18700, 2024 08 12.
Article
em En
| MEDLINE
| ID: mdl-39134592
ABSTRACT
Functional electrical stimulation (FES) can support functional restoration of a paretic limb post-stroke. Hebbian plasticity depends on temporally coinciding pre- and post-synaptic activity. A tight temporal relationship between motor cortical (MC) activity associated with attempted movement and FES-generated visuo-proprioceptive feedback is hypothesized to enhance motor recovery. Using a brain-computer interface (BCI) to classify MC spectral power in electroencephalographic (EEG) signals to trigger FES-delivery with detection of movement attempts improved motor outcomes in chronic stroke patients. We hypothesized that heightened neural plasticity earlier post-stroke would further enhance corticomuscular functional connectivity and motor recovery. We compared subcortical non-dominant hemisphere stroke patients in BCI-FES and Random-FES (FES temporally independent of MC movement attempt detection) groups. The primary outcome measure was the Fugl-Meyer Assessment, Upper Extremity (FMA-UE). We recorded high-density EEG and transcranial magnetic stimulation-induced motor evoked potentials before and after treatment. The BCI group showed greater FMA-UE improvement; motor evoked potential amplitude; beta oscillatory power and long-range temporal correlation reduction over contralateral MC; and corticomuscular coherence with contralateral MC. These changes are consistent with enhanced post-stroke motor improvement when movement is synchronized with MC activity reflecting attempted movement.
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Base de dados:
MEDLINE
Assunto principal:
Potencial Evocado Motor
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Recuperação de Função Fisiológica
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Acidente Vascular Cerebral
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Eletroencefalografia
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Estimulação Magnética Transcraniana
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Interfaces Cérebro-Computador
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Reabilitação do Acidente Vascular Cerebral
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Córtex Motor
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Plasticidade Neuronal
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Alemanha