Motor Imagery Driven BCI with Cue-Based Selection of FES Induced Grasps
Conference paper
Abstract
We present a BCI supported assistive system that comprises selective Functional Electrical Stimulation (FES) driven by subject’s motor imagery (MI). BCI control is based on subjects’ ability to voluntarily modulate their EEG sensory- motor rhythms. Event-related desynchronisation (ERD) of the alphoid mu rhythm is used for on-line detection of subjects’ execution of MI task. Current BCI-FES system can induce three types of grasp, palmar, lateral and precision. Cue-based brain switch is used to trigger the predefined FES pattern for each grasping type. System was tested on 4 healthy subjects who gained control over the BCI with mean accuracy of 88.8%.
Keywords
Motor Imagery Functional Electrical Stimulation Brain Computer Interface Stimulation Pattern Functional Electrical Stimulation System
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