RecruitingDevice studyFeasibility of the BrainGate2 Neural Interface System in Persons With Tetraplegia (BG-Speech-02)The goal of this study is to improve our understanding of speech production, and to translate this into medical devices called intracortical brain-computer interfaces (iBCIs) that will enable people who have lost the ability to speak fluently to communicate via a computer just by trying to speak.