The invention relates to a method for estimating the electrical activity of a tissue using a plurality of sensors, in particular the brain activity related to a motor task performed, imagined, or visualized by a subject, using a plurality of magnetoencephalographic or electroencephalographic sensors, when this subject is submitted to a stimulus. The estimation method is based on an MNE criterion in which the coefficients of the covariance matrix of the physiological signals acquired by the different sensors are weighted using the correlation coefficients of these signals with a signal representative of the stimulus.
METHOD FOR LOCATING A BRAIN ACTIVITY ASSOCIATED WITH A TASK