EEG-based interface. An
EEG-based BCI used for the control of the Mindwalker lower-extremity
87]. In this setup the
BCI is controlled using Steady State Visually Evoked Potentials (SSVEP).
The glasses that the user is wearing stimulate the retina with several
flashing lights at different frequencies, and depending on which
flashing light the users looks at, the brain will generate electrical
activity at the same (or a multiple) frequency as the visual stimulus.
With this method, different control states are assigned to the
electrical brain signals with specific frequencies. Additional file
1 shows this EEG-based BCI
controlling the Mindwalker lower-extremity exoskeleton. Figure courtesy
of Mindwalker project.