Method of removing nuclear magnetic artifacts in EEG signal based on automatic ICA
A technology of nuclear magnetic and artifacts, which is applied in the field of removing nuclear magnetic artifacts in EEG signals based on automatic ICA, can solve problems such as missing components, affecting processing speed, and affecting experimental quality, so as to avoid inconvenience and reduce information loss. Effect
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[0026] This embodiment provides a method for removing nuclear magnetic artifacts in EEG signals based on automatic ICA. The flowchart of the method is as follows: figure 1 As shown, including the following steps:
[0027] 1) Perform basic denoising processing on the EEG signal containing nuclear magnetic artifacts, and obtain the EEG signal X'(t) with most nuclear magnetic artifacts removed;
[0028] Wherein, the specific process of the basic denoising processing is: determining the frequency f of the nuclear magnetic fundamental wave according to the repetition time TR of the nuclear magnetic scanner and the number of layers of a whole brain scan. b , Select the N signal channels to be processed, and set the EEG signal containing nuclear magnetic artifacts X(t)=[x 1 (t),x 2 (t),…,x N (t)] T After AAS processing, the EEG signal X'(t) with most nuclear magnetic artifacts removed is obtained, where N represents the channel, t represents the time, and T represents the ...
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