Electroencephalogram source localization method based on granger causality
A technology of Granger causality and brain power location, applied in the field of brain power location, can solve problems such as the idea of information flow direction location between leads that has not been proposed
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[0037] A Granger causality-based brain power location method of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.
[0038] A method for locating brain power sources based on Granger causality of the present invention first utilizes EEG acquisition equipment to record multi-conductor scalp EEG signals, and performs preliminary preprocessing; secondly, analyzes the relationship between each lead and other leads. Granger causality, according to the causality index to determine the possibility index of the mutual source between the leads; finally count the number of leads that can be the source of other leads, and estimate the possibility of each lead as the source area of the whole brain, Realize whole brain source localization.
[0039] Granger causality is used to explore the information flow between variables. It is a research method based on probability theory. In actual operation, a univariate autoregre...
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