The sensitivity of ECG contamination to surgical implantation site in brain computer interfaces by Neumann, W-J, Sorkhabi, MM, Benjaber, M, Feldmann, LK, Saryyeva, A, Krauss, JK, Contarino, MF, Sieger, T, Jech, R, Tinkhauser, G, Pollo, C, Palmisano, C, Isaias, IU, Cummins, DD, Little, SJ, Starr, PA, Kokkinos, V, Gerd-Helge, S, Herrington, T, Brown, P, Richardson, RM, Kühn, AA, Denison, TJ