Results 61 to 70 of about 30,896 (211)

Non-Invasive Functional-Brain-Imaging with an OPM-based Magnetoencephalography System.

PLoS ONE, 2020
A non-invasive functional-brain-imaging system based on optically-pumped-magnetometers (OPM) is presented. The OPM-based magnetoencephalography (MEG) system features 20 OPM channels conforming to the subject's scalp. We have conducted two MEG experiments
Amir Borna, Tony R Carter, Anthony P Colombo, Yuan-Yu Jau, Jim McKay, Michael Weisend, Samu Taulu, Julia M Stephen, Peter D D Schwindt   +8 more
doaj   +1 more source

Caffeine-Induced Global Reductions in Resting-State BOLD Connectivity Reflect Widespread Decreases in MEG Connectivity. [PDF]

, 2013
In resting-state functional magnetic resonance imaging (fMRI), the temporal correlation between spontaneous fluctuations of the blood oxygenation level dependent (BOLD) signal from different brain regions is used to assess functional connectivity ...
Diwakar, Mithun, Huang, Ming-Xiong, Lee, Roland, Liu, Thomas T, Olafsson, Valur, Tal, Omer, Wong, Chi-Wah   +6 more
core   +1 more source

Deep characterization of refractory epilepsy due to mild malformation of cortical development with oligodendroglial hyperplasia (MOGHE) and insights into the role of invasive monitoring

Epilepsia, EarlyView.
Abstract Objective Epilepsy surgery is an effective treatment option for patients with medically refractory epilepsy due to mild malformation of cortical development with oligodendroglial hyperplasia (MOGHE). The success of surgery depends on the accurate localization of the epileptogenic zone, which can be challenging due to the subtle imaging ...
Jean Khoury, Ingmar Blümcke, Robyn M. Busch, Balu Krishnan, Juan Bulacio, William Bingaman, Demitre Serletis, Imad Najm   +7 more
wiley   +1 more source

A comparison of minimum norm and MUSIC for a combined MEG/EEG sensor array [PDF]

Advances in Radio Science, 2012
Many different algorithms for imaging neuronal activity with magnetoencephalography (MEG) or electroencephalography (EEG) have been developed so far. We validate the result of other authors that a combined MEG/EEG sensor array provides smaller source ...
H. Ahrens, F. Argin, L. Klinkenbusch
doaj   +1 more source

On Linearly Constrained Minimum Variance Beamforming [PDF]

, 2015
Beamforming is a widely used technique for source localization in signal processing and neuroimaging. A number of vector-beamformers have been introduced to localize neuronal activity by using magnetoencephalography (MEG) data in the literature ...
Liu, Chao, Zhang, Jian
core   +1 more source

Absence seizures: Update on signaling mechanisms and networks

Epilepsia Open, EarlyView.
Abstract Absence seizures (AS) are a hallmark of genetic generalized epilepsies (GGE), characterized by brief episodes of impaired consciousness accompanied by electroencephalographic spike‐and‐wave discharges (SWDs). Traditionally attributed to cortico‐thalamo‐cortical (CTC) dysrhythmia, emerging evidence suggests a more intricate pathophysiological ...
Ozlem Akman, Filiz Onat
wiley   +1 more source

The Unique Determination of Neuronal Currents in the Brain via Magnetoencephalography

, 2004
The problem of determining the neuronal current inside the brain from measurements of the induced magnetic field outside the head is discussed under the assumption that the space occupied by the brain is approximately spherical.
A S Fokas, Clarke J, Crease R P, Dassios G, DeMunck J C, Fokas A S, Grynszpan F, Hamalainen M, Hamalainen M S, Helmholtz H, Helmholtz H, Hille B, Ilmoniemi R J, Ioannides A A, Press W H, Sarvas J, Scherg M, V Marinakis, Y Kurylev   +18 more
core   +1 more source

Functional connectivity measured with magnetoencephalography identifies persons with HIV disease [PDF]

, 2012
There is need for a valid and reliable biomarker for HIV Associated Neurocognitive Disorder (HAND). The purpose of the present study was to provide preliminary evidence of the potential utility of neuronal functional connectivity measures obtained using ...
Aizenstein, Howard J., Bagic, Anto, Bajo, Ricardo, Becker, James T., Cuesta, Pablo, Fabrizio, Melissa, Lopez, Oscar L., Maestu, Fernando, Parkkonen, Lauri, Sudre, Gustavo, Wolk, David   +10 more
core   +3 more sources

Uncovering the geometry of color space with magnetoencephalography (MEG) [PDF]

, 2020
The geometry that describes the relationship among colors is unsettled despite centuries of study. Here we present a new approach, using multivariate analyses of direct measurements of brain activity obtained with magnetoencephalography to reverse-engineer the geometry of the neural representation of color space.
Isabelle Rosenthal, Shridhar Singh, Katherine Hermann, Dimitrios Pantazis, Bevil R. Conway   +4 more
openaire   +1 more source

Novel planning pipeline utilizing the Surgical Theater system for pediatric epilepsy surgery

Epilepsia Open, EarlyView.
Abstract Objective Advances in the analysis and collation of radiographic datasets have enhanced presurgical planning for various neurosurgical procedures, including clipping of cerebral aneurysms, surgical resection of tumors, and arteriovenous malformation management.
Lisa B. E. Shields, Hunain Abri, Cemal Karakas, Shannon D. Davis, Ian S. Mutchnick   +4 more
wiley   +1 more source