Method for locating brain activity sensors for direct neural control, comprising: - a step of locating brain activity comprising the following steps: a) applying to a subject a first series of sensory stimuli and acquiring, by means of a set of sensors, first respective series of signals representative of a brain activity associated with a first task performed or imagined by said subject in response to the sensory stimuli of said first series, each said sensor being sensitive to the activity of a respective region of the brain of said subject; b) applying to said subject a second series of sensory stimuli and acquiring, by means of said set of sensors, second respective series of signals representative of a brain activity associated with a second task, different from said first task, performed or imagined by said subject in response to the sensory stimuli of said second series; characterised in that it comprises: step c) consisting of, for each said sensor, constructing a multidimensional variable representative of the first and the second corresponding series of signals, and determining a correlation co-efficient between said multidimensional variable and an observation vector representative of said first and second sensory stimuli, said step c) comprising the concatenation of the multidimensional variables representative of said first and second series of signals, with change of sign of one of them - a step of determining optimum locations of said brain activity sensors according to the results of said step of locating a brain activity. - a step of locating brain activity comprising the following steps: a) applying to a subject a first series of sensory stimuli and acquiring, by means of a set of sensors, first respective series of signals representative of a brain activity associated with a first task performed or imagined by said subject in response to the sensory stimuli of said first series, each said sensor being sensitive to the activity of a respective region of the brain of said subject; b) applying to said subject a second series of sensory stimuli and acquiring, by means of said set of sensors, second respective series of signals representative of a brain activity associated with a second task, different from said first task, performed or imagined by said subject in response to the sensory stimuli of said second series; characterised in that it comprises: step c) consisting of, for each said sensor, constructing a multidimensional variable representative of the first and the second corresponding series of signals, and determining a correlation co-efficient between said multidimensional variable and an observation vector representative of said first and second sensory stimuli, said step c) comprising the concatenation of the multidimensional variables representative of said first and second series of signals, with change of sign of one of them a) applying to a subject a first series of sensory stimuli and acquiring, by means of a set of sensors, first respective series of signals representative of a brain activity associated with a first task performed or imagined by said subject in response to the sensory stimuli of said first series, each said sensor being sensitive to the activity of a respective region of the brain of said subject; b) applying to said subject a second series of sensory stimuli and acquiring, by means of said set of sensors, second respective series of signals representative of a brain activity associated with a second task, different from said first task, performed or imagined by said subject in response to the sensory stimuli of said second series; characterised in that it comprises: step c) consisting of, for each said sensor, constructing a multidimensional variable representative of the first and the second corresponding series of signals, and determining a correlation co-efficient between said multidimensional variable and an observation vector representative of said first and second sensory stimuli, said step c) comprising the concatenation of the multidimensional variables representative of said first and second series of signals, with change of sign of one of them step c) consisting of, for each said sensor, constructing a multidimensional variable representative of the first and the second corresponding series of signals, and determining a correlation co-efficient between said multidimensional variable and an observation vector representative of said first and second sensory stimuli, said step c) comprising the concatenation of the multidimensional variables representative of said first and second series of signals, with change of sign of one of them - a step of determining optimum locations of said brain activity sensors according to the results of said step of locating a brain activity.