Maximum contrast beamformer for electromagnetic mapping of brain activity

Yong-Sheng Chen, Chih Yu Cheng, Jen Chuen Hsieh, Li Fen Chen*

*此作品的通信作者

研究成果: Article同行評審

28 引文 斯高帕斯(Scopus)

摘要

Beamforming technique can be applied to map the neuronal activities from magnetoencephalographic/electroencephalographic (MEG/EEG) recordings. One of the major difficulties of the scalar-type MEG/EEG beamformer is the determination of accurate dipole orientation, which is essential to an effective spatial filter. This paper presents a new beamforming technique which exploits a maximum contrast criterion to maximize the ratio of the neuronal activity estimated in a specified active state to the activity estimated in a control state. This criterion leads to a closed-form solution of the dipole orientation. Experiments with simulation, phantom, and finger-lifting data clearly demonstrate the effectiveness, efficiency, and accuracy of the proposed method.

原文English
文章編號1673618
頁(從 - 到)1765-1774
頁數10
期刊IEEE Transactions on Biomedical Engineering
53
發行號9
DOIs
出版狀態Published - 1 9月 2006

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