Referenced Items are not available for this document.
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
Published in:
Biomedical Engineering, IEEE Transactions on
(Volume:53
,
Issue:
9
)
Date of Publication: Sept. 2006
- Page(s):
- 1765 - 1774
- ISSN :
- 0018-9294
- INSPEC Accession Number:
- 9039803
- Digital Object Identifier :
- 10.1109/TBME.2006.878115
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 14 August 2006
- Issue Date :
- Sept. 2006
- Sponsored by :
- IEEE Engineering in Medicine and Biology Society
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