7T fMRI reveals feasibility of covert visual attention-based brain-computer interfacing with signals obtained solely from cortical grey matter accessible by subdural surface electrodes
Andersson, J.P., Ramsey, N.F., Viergever, M.A., Pluim, J.P.W.
DOI: https://doi.org/10.1016/j.clinph.2013.05.009
Clinical Neurophysiology 124 (11), p. 2191-2197