Devices and methods for readiness potential-based brain-computer interface

The invention brain may provide a computer interface device. The brain-computer interface device is a pre-treatment to pre-treatment to prepare a potential signal measured by the brain wave detecting apparatus unit; Removing the noise in the pre-treated preparation and the potential noise signal rejection; To the signal processor for calculating a noise removal strength of the preparation potential signal, the phase, the occurrence place, occurs more than one time to extract the characteristics associated with the user's intention, and; And the extracted data may include a data classification for classifying the want for any operation.