Fully implanted brain–computer interface in a locked-in patient with ALS by Vansteensel, MJ, Pels, EGM, Bleichner, MG, Branco, MP, Denison, T, Freudenburg, ZV, Gosselaar, P, Leinders, S, Ottens, TH, Van Den Boom, MA, Van Rijen, PC, Aarnoutse, EJ, Ramsey, NF