Results 41 to 50 of about 19,445 (231)

Magnetoencephalography as a putative biomarker for Alzheimer's disease.

, 2011
Alzheimer’s Disease (AD) is the most common dementia in the elderly and is estimated to affect tens of millions of people worldwide. AD is believed to have a prodromal stage lasting ten or more years.
Maestu, F., Del Pozo, F., Fernandez, A., Fernández, Alberto, Eero Pekkonen, Van Dijk, Bob W., Bagic, A., Bagic, Anto, Jyrki Makela, Nazareth Castellanos, Francisco del Pozo, James T. Becker, Perales Castellanos, Nazareth, Zamrini, Edward, Zamrini, E., Ricardo Bajo, Sudre, Gustavo, van Dijk, B.W., Makela, Jyrki, Pozo Guerrero, Francisco del, Funke, Michael, Edward Zamrini, Maestú, Fernando, Riley, M., Sudre, G., Pozo, F. Del, Fernando Maestu, Becker, James T., Myles Riley, Bajo, R., Funke, M., Myles, Riley, Pekkonen, E., Bob W. van Dijk, Stam, C.J., Castellanos, N., Makela, J., Dijk, B.W. van, C. J. Stam, Becker, J.T., Pekkonen, Eero, Gustavo Sudre, Bajo Breton, Ricardo, Alberto Fernandez, Michael Funke, Anto Bagic   +45 more
core   +1 more source

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

Inhibitory Decay and Supercritical Brain Dynamics During Sleep Deprivation

Advanced Science, EarlyView.
Sleep deprivation progressively shifts human brain dynamics from near‐critical toward supercritical states, as revealed by neuronal avalanche analysis of resting‐state fMRI. These changes track subjective sleep pressure rather than vigilance lapses and show marked network heterogeneity. A circuit model suggests that reduced inhibitory efficacy provides
Dai Zhang, Liqin Zhou, Rong Wang, Yuehua Han, Zhentao Zuo, Yanghua Tian, Ke Zhou   +6 more
wiley   +1 more source

A multimodal neuroimaging study of somatosensory system [PDF]

, 2010
The thesis is the result of a training by the Magnetoencephalography (MEG)-lab by the Center mind/brain science of the university of Trento. Final goal of the analysis was answering the question if MEG is capable to capture activities from the ...
Leonardelli, Elisa
core  

Auditory Sensitivity in Autism: A Systematic Review of Mismatch Negativity and Mismatch Field Responses

Autism Research, EarlyView.
ABSTRACT Auditory mismatch responses—mismatch negativity (MMN) and mismatch fields (MMF)—are well established electrophysiological markers of automatic auditory discrimination supported by short‐term sensory memory. These responses, typically elicited using passive oddball paradigms, are increasingly used to investigate sensory and language processing ...
Sara Cacciato‐Salcedo, Shreya Jaokar, Neil J. Ingham, Manuel S. Malmierca, Marija M. Petrinovic   +4 more
wiley   +1 more source

During visual word recognition, phonology is accessed within 100 ms and may be mediated by a speech production code: evidence from magnetoencephalography

, 2010
Debate surrounds the precise cortical location and timing of access to phonological information during visual word recognition. Therefore, using whole-head magnetoencephalography (MEG), we investigated the spatiotemporal pattern of brain responses ...
Hansen, Peter, Cornelissen, Piers, Frost, Stephen, Wheat, KL, Wheat, Katherine, Frost, SJ, Hansen, Peter; id_orcid, Cornelissen, PL   +7 more
core   +1 more source

Virtual localization of the seizure onset zone: Using non-invasive MEG virtual electrodes at stereo-EEG electrode locations in refractory epilepsy patients

NeuroImage: Clinical, 2018
In some patients with medically refractory epilepsy, EEG with intracerebrally placed electrodes (stereo-electroencephalography, SEEG) is needed to locate the seizure onset zone (SOZ) for successful epilepsy surgery.
Erika L. Juárez-Martinez, Ida A. Nissen, Sander Idema, Demetrios N. Velis, Arjan Hillebrand, Cornelis J. Stam, Elisabeth C.W. van Straaten   +6 more
doaj   +1 more source

A guide to neuromodulation in drug‐resistant epilepsy

Epileptic Disorders, EarlyView.
Abstract Neuromodulation is approved for the treatment of drug‐resistant epilepsy. It has been increasingly utilized over the past two decades with the approval of deep brain stimulation (DBS) and responsive neurostimulation (RNS) in addition to vagus nerve stimulation (VNS)—particularly in patients who are not deemed to be good resective surgical ...
Prachi Parikh, Irena Dolezawa, Manu Hegde, Lukas Imbach, Brian N. Lundstrom, Francesca Pizzo, Vikram R. Rao, Jaysingh Singh, Derek Southwell, Satsuke Watanabe, Birgit Frauscher   +10 more
wiley   +1 more source

Signal Processing for Magnetoencephalography [PDF]

, 2010
Magnetoencephalography (MEG) is a non-invasive technology for imaging human brain function. Contemporary methods of analysing MEG data include dipole fitting, minimum norm estimation (MNE) and beamforming.
Clarke, Rupert, Clarke, Rupert Benjamin
core  

Post-Processing for Spectral Coherence of Magnetoencephalogram Background Activity: Application to Alzheimer’s Disease

, 2014
Estimating the connectivity between magnetoencephalogram (MEG) signals provides an excellent opportunity to analyze whole brain functional integration across a spectrum of conditions from health to disease.
Javier Escudero, Anastasiou, Athanasios, Athanasios Anastasiou, Alberto Fernandez, Escudero, Javier; id_orcid, Fernandez, Alberto   +5 more
core   +1 more source