Steady State Visual Evoked Potential (SSVEP) - Based brain spelling system with synchronous and asynchronous typing modes

Abstract

The paper presents an EEG-based wireless brain-computer interface (BCI) with which subjects can mind-spell text on a computer screen. The application is based on the detection of steady-state visual evoked potentials (SSVEP) in EEG signals recorded on the scalp of the subject. The performance of the BCI is compared for two different classification paradigms, called synchronous and asynchronous modes. © 2011 Springer-Verlag.