Closely Spaced MEG Source Localization and Functional Connectivity Analysis Using a New Prewhitening Invariance of Noise Space Algorithm

<div>(a) Correlation coefficient matrix of real spontaneous MEG noise from a randomly selected trial. (b) Correlation coefficient matrix of real spontaneous MEG noise after being projected to a new space defined by the orthogonal complement of dominant eigenvectors of real MEG noise from another trial. The sum of absolute values of nondiagonal elements in (a) is 1.6 times larger than that in (b), implying that the spatial correlation between MEG noise can be decreased by the prewhitening operation. Colorbar indicates the values of correlation coefficient.</div>

Neural Plasticity

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Figure 4

Figure 4: Closely Spaced MEG Source Localization and Functional Connectivity Analysis Using a New Prewhitening Invariance of Noise Space Algorithm 