Abstract: This study aims to present a comprehensive survey of the methods and techniques that are applied in the different stages of processing the brain activities, whether the functional or cognitive activities. In the first part, the common methodologies in each phase were listed in detail. They are signals acquisition, signals preprocessing, features extraction and signals classification. While in the second part a review of previous studies regarding the methods and techniques used, where the focus was only limited to the EEG technology. And the third part presents an initial idea of how to use the nanotechnology in the process of effective recording of the brain wavesy.
Key Word: BCI; Electroencephalogram; Signals-Acquisition; Signals Preprocessing; Features Extraction; Signals Classification; Nanotechnology
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