SSVEP-Based BCI for Lower Limb Rehabilitation

SSVEPs are less vulnerable to noise than other kinds of EEG signals and have, therefore, recently become popular in BCI applications. To our knowledge, this chapter is the first to demonstrate an online asynchronous analogue SSVEP-based BCI for lower limb rehabilitation in which the movement of a robotic exoskeleton is continuously controlled by the user’s intent. Such patient participation has proved to be one of the most important factors for rehabilitating the neural system after injury or stroke. Three new and different training protocols were developed specifically for rehabilitation and tested with the ANBF. Results with six healthy participants were extremely good, with an accuracy to within a knee angle of 1° after simple training. These results are promising for the future development of brain controlled rehabilitation devices.

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