Performance of an MEG adaptive-beamformer technique in the presence of correlated neural activities: effects on signal intensity and time-course estimates

@article{Sekihara2002PerformanceOA,
  title={Performance of an MEG adaptive-beamformer technique in the presence of correlated neural activities: effects on signal intensity and time-course estimates},
  author={Kensuke Sekihara and Srikantan S. Nagarajan and David Poeppel and Alec Marantz},
  journal={IEEE Transactions on Biomedical Engineering},
  year={2002},
  volume={49},
  pages={1534-1546}
}
The influence of temporarily correlated source activities on neuromagnetic reconstruction by adaptive beamformer techniques was investigated. It is known that the spatial filter weight of an adaptive beamformer cannot perfectly block correlated signals. This causes two major influences on the reconstruction results: time course distortions and reductions in reconstructed signal intensities. Our theoretical analysis and numerical experiments both showed that the reduction in signal intensity for… CONTINUE READING
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