Computing MEG signal sources
Eklund, J.M.
Bajesy, R.
Sprinkle, J.
Simpson, G.V.
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA;
Abstract
This paper deals with the complexity of the inverse computation of brain currents from magnetoencephalography (MEG) signals. MEG measures the magnetic field outside the head: in effect, the resultant field from the flow of current inside the brain. We describe our current techniques to perform this inverse computation (called source estimation in much of the literature), which provides a view of brain activity that is less sensitive to disturbances which affect other kinds of brain activity measurements, though much more expensive to record.
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