{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T03:31:29Z","timestamp":1774323089544,"version":"3.50.1"},"reference-count":44,"publisher":"World Scientific Pub Co Pte Lt","issue":"06","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Neur. Syst."],"published-print":{"date-parts":[[2019,8]]},"abstract":"<jats:p> In the recent past, estimating brain activity with magneto\/electroencephalography (M\/EEG) has been increasingly employed as a noninvasive technique for understanding the brain functions and neural dynamics. However, one of the main open problems when dealing with M\/EEG data is its non-Gaussian and nonstationary structure. In this paper, we introduce a methodology for enhancing the data covariance estimation using a weighted combination of multiple Gaussian kernels, termed WM-MK, that relies on the Kullback\u2013Leibler divergence for associating each kernel weight to its relevance. From the obtained results of validation on nonstationary and non-Gaussian brain activity (simulated and real-world EEG data), WM-MK proves that the accuracy of the source estimation raises by more effectively exploiting the measured nonlinear structures with high time and space complexity. <\/jats:p>","DOI":"10.1142\/s0129065719500011","type":"journal-article","created":{"date-parts":[[2019,1,22]],"date-time":"2019-01-22T08:28:29Z","timestamp":1548145709000},"page":"1950001","source":"Crossref","is-referenced-by-count":11,"title":["Enhanced Data Covariance Estimation Using Weighted Combination of Multiple Gaussian Kernels for Improved M\/EEG Source Localization"],"prefix":"10.1142","volume":"29","author":[{"given":"J. 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