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Báo cáo hóa học: " Brain-Computer Interface Controlled Functional Electrical Stimulation System for Ankle Movement"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Brain-Computer Interface Controlled Functional Electrical Stimulation System for Ankle Movement | Do et al. Journal of NeuroEngineering and Rehabilitation 2011 8 49 http www.jneuroengrehab.eom content 8 1 49 Illfri 1 JOURNAL OF NEUROENGINEERING I Her and rehabilitation RESEARCH Open Access Brain-Computer Interface Controlled Functional Electrical Stimulation System for Ankle Movement An H Do1 2 Po T Wang3 Christine E King3 Ahmad Abiri4 and Zoran Nenadic3 4 Abstract Background Many neurological conditions such as stroke spinal cord injury and traumatic brain injury can cause chronic gait function impairment due to foot-drop. Current physiotherapy techniques provide only a limited degree of motor function recovery in these individuals and therefore novel therapies are needed. Brain-computer interface BCI is a relatively novel technology with a potential to restore substitute or augment lost motor behaviors in patients with neurological injuries. Here we describe the first successful integration of a noninvasive electroencephalogram EEG -based BCI with a noninvasive functional electrical stimulation FES system that enables the direct brain control of foot dorsiflexion in able-bodied individuals. Methods A noninvasive EEG-based BCI system was integrated with a noninvasive FES system for foot dorsiflexion. Subjects underwent computer-cued epochs of repetitive foot dorsiflexion and idling while their EEG signals were recorded and stored for offline analysis. The analysis generated a prediction model that allowed EEG data to be analyzed and classified in real time during online BCI operation. The real-time online performance of the integrated BCI-FES system was tested in a group of five able-bodied subjects who used repetitive foot dorsiflexion to elicit BCI-FES mediated dorsiflexion of the contralateral foot. Results Five able-bodied subjects performed 10 alternations of idling and repetitive foot dorsifiexion to trigger BCI-FES mediated dorsifiexion of the contralateral foot. The epochs of BCI-FES mediated foot dorsifiexion were highly correlated with the epochs of