This book brings together the two relatively disparate fields of research and applications: neuroprosthetics and neuromarkers, exploring a not only how we study the brain, but how that knowledge can be applied to make brain-interfacing applications. As well as looking at the practical engineering and neuroscience aspects, it looks at the clinical regulatory and ethical issues that this development and convergence is starring to define. Written by the leader in the field, the book is designed to not just collate recent research results, but to be of practical use.