Abstract: The disclosure pertains to a non-invasive method and system for detecting and evaluating neural electrophysiological sources by exploring a multiplicity of points belonging to a zone of interest. The non-invasive techniques pose problems as to the instability of the estimation in relation to the position of the measurement points and errors of geometrical registration with complementary anatomical examinations, this possibly generating significant errors. The present disclosure is aimed at proposing a non-invasive method and system for detecting and evaluating profound neural electrophysiological activity which is both fast, complete and accurate.

Abstract: The invention relates to a method of representing a dynamic functional image of the brain. It consists in acquiring (A) for a specific duration a plurality of electrophysiological signals {esi}1N of cerebral activity from a set of electrodes {Ei}1N placed on the scalp (S) of the subject, in locating (B) the set of neuroelectric generators {{right arrow over (g)}jk}11JK in the cerebral volume from a three-dimensional image {Ck}1K made up of successive cross-sections of the brain, and in applying the inverse problem, and within active zones that include neuroelectric generators discriminating (C) the amount of synchrony that exists between electrophysiological signal and neuroelectric generator pairs in a plurality of frequency bands, to detect groups of discriminating neural networks {RNdk}1K. The invention is useful for non-invasive study of provoked or unprovoked functional anomalies.