Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn 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 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
