A novel adaptive beamformer for MEG source reconstruction effective when large background brain activities exist
K Sekihara, KE Hild… - IEEE Transactions on …, 2006 - ieeexplore.ieee.org
… the adaptive beamformers. We show in Section III that the background brain activity can
cause a significant reduction in the source intensity and severe spatial blur in adaptive-…
cause a significant reduction in the source intensity and severe spatial blur in adaptive-…
Reconstruction of correlated brain activity with adaptive spatial filters in MEG
… as an effective method for the localization of brain activity from … Only small differences
exist among various beamforming … of beamformers in the presence of correlated sources, in …
exist among various beamforming … of beamformers in the presence of correlated sources, in …
Reconstructing spatio-temporal activities of neural sources using an MEG vector beamformer technique
K Sekihara, SS Nagarajan, D Poeppel… - IEEE transactions on …, 2001 - ieeexplore.ieee.org
… brain dynamics [2]. Toward this goal, a number of algorithms for … ical experiments verify the
effectiveness of the proposed beam- … Three signal sources were assumed to exist on a plane …
effectiveness of the proposed beam- … Three signal sources were assumed to exist on a plane …
[HTML][HTML] Modified covariance beamformer for solving MEG inverse problem in the environment with correlated sources
A Kuznetsova, Y Nurislamova, A Ossadtchi - NeuroImage, 2021 - Elsevier
… time efficient and prone to errors if the seed source is set apriori. … with other relevant source
reconstruction methods we ran … irrelevant activity with 1000 task-unrelated cerebral sources …
reconstruction methods we ran … irrelevant activity with 1000 task-unrelated cerebral sources …
Beamformer analysis of MEG data
A Hillebrand, GR Barnes - International review of neurobiology, 2005 - Elsevier
… source reconstruction approach, beamforming… beamformers provide us with a magic way
to image the brain. However, the methods do bring to light a simple and surprisingly successful …
to image the brain. However, the methods do bring to light a simple and surprisingly successful …
[HTML][HTML] Comparison of beamformer implementations for MEG source localization
… source imaging estimate source distributions that reconstruct (… noise covariance, and the
effective number of sensors (rank) … However, pathological brain activity may produce high SNR, …
effective number of sensors (rank) … However, pathological brain activity may produce high SNR, …
[HTML][HTML] A unified view on beamformers for M/EEG source reconstruction
… academic open source software packages for MEG analysis (… The successful estimation of
source activity using beamformers … to obtain a whole brain estimate of source time courses, …
source activity using beamformers … to obtain a whole brain estimate of source time courses, …
Localization of coherent sources by simultaneous MEG and EEG beamformer
… brain sources of neuroscientists’ interest are coherent (correlated). Even though it was reported
that beamformer is well able to reconstruct … sources in the designated region effectively. …
that beamformer is well able to reconstruct … sources in the designated region effectively. …
MEG beamforming using Bayesian PCA for adaptive data covariance matrix regularization
… brain image of the brain's activity. However, the sensitivity of the … be small and that
component will effectively not be retained. The … source time course and the beamformer-reconstructed …
component will effectively not be retained. The … source time course and the beamformer-reconstructed …
[HTML][HTML] On the potential of a new generation of magnetometers for MEG: a beamformer simulation study
… generated by sources in spatially separate brain locations; this … We examine reconstruction
accuracy of beamforming for … systems the effective characterisation of deep sources relies on …
accuracy of beamforming for … systems the effective characterisation of deep sources relies on …