1 IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING Special Issue on “Brain-Computer Interface Technology” Asynchronous BCI and Local Neural Classifiers: An Overview of the Adaptive Brain Interface Project

Abstract—In this paper we give an overview of our work on an asynchronous BCI (where the subject makes self-paced decisions on when to switch from one mental task to the next) that responds every 0.5 seconds. A local neural classifier tries to recognize three different mental tasks; it may also respond “unknown ” for uncertain samples as the classifier has incorporated statistical rejection criteria. We report our experience with 15 subjects. We also briefly describe two brainactuated applications we have developed: a virtual keyboard and a mobile robot (emulating a motorized wheelchair)