Brain-controlled wheelchair based EEG-SSVEP signals classified by nonlinear adaptive filter

In this paper, an extraction for brain-controlled wheelchair by applying nonlinear adaptive filter on EEG-SSVEP is proposed. A four-choice signal paradigm with differents frequencies (i.e., from 6 to 9 Hz for left, right, bottom, and top, respectively) is used to stimulate the four subjects (about 25±1 years old) in the experiment. The experimental results show that the application of the extraction method achieves a very significant statistical improvement in extracting peak amplitude features.