A magnetoencephalography source localization method and device based on Tucker decomposition and a ripple time window, the device comprising: a magnetoencephalography sensor, which is used for acquiring a first magnetoencephalography signal of a user; a ripple detection unit, which is used for detecting, by means of a root mean square method, a ripple time window in the first magnetoencephalography signal as a time window for source localization, so as to obtain the first magnetoencephalography signal in the ripple time window as a second magnetoencephalography signal; a higher-order orthogonal iteration-based Tucker decomposition unit, which is used for performing Tucker decomposition on an original tensor of the second magnetoencephalography signal to calculate an estimated value of the original tensor; and a source localization unit, which is used for calculating a covariance matrix of the estimated value, and calculating, by means of an LCMV inverse problem solving method in a beamforming method, a source location corresponding to the second magnetoencephalography signal. The present invention eliminates the effect of noise signals, reduces calculation complexity, ensures consistency in each instance of calculation results, and improves the accuracy of epileptogenic region localization.
MAGNETOENCEPHALOGRAPHY SOURCE LOCALIZATION METHOD AND DEVICE BASED ON TUCKER DECOMPOSITION AND RIPPLE TIME WINDOW