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

Figure 3

Performance comparison between sLORETA, LCMV beamformer, INN, and PW-INN in resolving closely spaced sources in presence of white noise (a) or real MEG noise (b). SNR is set to 18. Correlation coefficient () varied from 1 to 0. From leftmost column to rightmost, is sequentially set to 1, 0.99, 0.97, 0.95, 0.9, 0.8, 0.7, 0.5, 0.3, and 0. White crosses indicate true source locations and white dots indicate estimated source locations. All results are obtained by averaging 100 independent trials.

(a)

(b)