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
This paper proposes a novel prewhitening eigenspace beamformer suitable for
magnetoencephalogram (MEG) source reconstruction when large background brain …

Performance of an MEG adaptive-beamformer source reconstruction technique in the presence of additive low-rank interference

K Sekihara, SS Nagarajan, D Poeppel… - IEEE Transactions on …, 2004 - ieeexplore.ieee.org
The influence of external interference on neuromagnetic source reconstruction by adaptive
beamformer techniques was investigated. In our analysis, we assume that the interference …

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

K Sekihara, SS Nagarajan, D Poeppel… - IEEE Transactions on …, 2002 - ieeexplore.ieee.org
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 …

Application of an MEG eigenspace beamformer to reconstructing spatio‐temporal activities of neural sources

K Sekihara, SS Nagarajan, D Poeppel… - Human brain …, 2002 - Wiley Online Library
We have applied the eigenspace‐based beamformer to reconstruct spatio‐temporal
activities of neural sources from MEG data. The weight vector of the eigenspace‐based …

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
The authors have developed a method suitable for reconstructing spatio-temporal activities
of neural sources by using magnetoencephalogram (MEG) data. The method extends the …

MEG beamforming using Bayesian PCA for adaptive data covariance matrix regularization

M Woolrich, L Hunt, A Groves, G Barnes - Neuroimage, 2011 - Elsevier
Beamformers are a commonly used method for doing source localization from
magnetoencephalography (MEG) data. A key ingredient in a beamformer is the estimation of …

Optimising experimental design for MEG beamformer imaging

MJ Brookes, J Vrba, SE Robinson, CM Stevenson… - Neuroimage, 2008 - Elsevier
In recent years, the use of beamformers for source localisation has significantly improved the
spatial accuracy of magnetoencephalography. In this paper, we examine techniques by …

Electromagnetic brain source imaging by means of a robust minimum variance beamformer

SAH Hosseini, A Sohrabpour… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Objective: Adaptive beamformer methods that have been extensively used for functional
brain imaging using EEG/MEG (magnetoencephalography) signals are sensitive to model …

Reconstruction of correlated brain activity with adaptive spatial filters in MEG

MA Quraan, D Cheyne - Neuroimage, 2010 - Elsevier
Adaptive spatial filters (beamformers) have gained popularity as an effective method for the
localization of brain activity from magnetoencephalography (MEG) data. Among the …

Maximum contrast beamformer for electromagnetic mapping of brain activity

YS Chen, CY Cheng, JC Hsieh… - IEEE Transactions on …, 2006 - ieeexplore.ieee.org
Beamforming technique can be applied to map the neuronal activities from
magnetoencephalographic/electroencephalographic (MEG/EEG) recordings. One of the …