Assessment of Cognitive Engagement in Stroke Patients From Single-Trial EEG During Motor Rehabilitation
- Assessment of Cognitive Engagement in Stroke Patients From Single-Trial EEG During Motor Rehabilitation
- 박완주; 권규현; 김다혜; 김연희; 김성필; 김래현
- Brain?computer interface (BCI); cognitive engagement; electroencephalography (EEG); rehabilitation; stroke
- Issue Date
- IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
- VOL 23, NO 3, 351-362
- Abstract—We propose a novel method for monitoring cognitive engagement in stroke patients during motor rehabilitation. Active engagement reflects implicit motivation and can enhance motor recovery. In this study, we used electroencephalography (EEG) to assess cognitive engagement in 11 chronic stroke patients while they executed active and passive motor tasks involving grasping and supination hand movements. We observed that the active motor task induced larger event-related desynchronization (ERD) than the passive task in the bilateral motor cortex and supplementary motor area (SMA). ERD differences between tasks were observed during both initial and post-movement periods . Additionally, differences in beta band activity were larger than differences in mu band activity . EEG data was used to help classify each trial as involving the active or passive motor task. Average classification accuracy was % for grasping movement and % for supination movement. Classification accuracy using a combination of movement and post-movement periods was higher than in other cases . Our results
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