Results 11 to 20 of about 26,988 (237)

Pediatric magnetoencephalography

Annals of the Child Neurology Society, 2023
Magnetoencephalography (MEG) is a technology used in pediatric and adult epilepsy that records magnetic fields produced from electric currents in the brain. MEG can locate epileptogenic zone(s), lateralize language functions, localize sensorimotor cortex,
Douglas R. Nordli III, Fernando N. Galan
doaj   +2 more sources

Magnetoencephalography: Basic principles

Annals of Indian Academy of Neurology, 2014
Magnetoencephalography (MEG) is the measurement of the magnetic field generated by the electrical activity of neurons. It is usually combined with a magnetic resonance imaging to get what is called magnetic source imaging.
Sanjay P Singh
doaj   +2 more sources

Sleep magnetoencephalography enhances detection and source imaging of seizures and fast oscillations in focal cortical dysplasia. [PDF]

Epilepsia
Abstract Objective Focal cortical dysplasia (FCD) causes drug‐resistant epilepsy requiring presurgical evaluation. Invasive electroencephalographic (EEG) studies demonstrate that sleep modulates epileptic activity, including interictal epileptiform discharges (IEDs), fast oscillations (FOs) in the beta (14–40 Hz) and gamma (40–80 Hz) frequency bands ...
Heers M, Afnan J, Braun C, Grova C, Altenmüller DM, Steinhoff BJ, Dümpelmann M, Demerath T, Urbach H, Ethofer S, Siegel M, Schulze-Bonhage A, Lerche H, Li Hegner Y.   +13 more
europepmc   +2 more sources

Modulation of Visual Contrast Perception Associated With Dorsal Attention Network Connectivity Assessed by Magnetoencephalography. [PDF]

Hum Brain Mapp
Magnetoencephalography was used to identify the impact of spatial attention on primary visual cortical responses to stimuli of varying contrast levels. Enhancement of the maximal response of the visual cortex to high contrast stimuli was associated with synchronous communication between the dorsal attention network and visual cortex within the alpha ...
Sklar AL, Coffman BA, López-Caballero F, Seebold D, Kocsis J, Fowler L, Rhorer H, Kavanagh J, Salisbury DF.   +8 more
europepmc   +2 more sources

Neural oscillatory dynamics serving abstract reasoning reveal robust sex differences in typically-developing children and adolescents

Developmental Cognitive Neuroscience, 2020
Fluid intelligence, the ability to problem-solve in novel situations, is linked to higher-order cognitive abilities, and to academic achievement in youth.
Brittany K. Taylor, Christine M. Embury, Elizabeth Heinrichs-Graham, Michaela R. Frenzel, Jacob A. Eastman, Alex I. Wiesman, Yu-Ping Wang, Vince D. Calhoun, Julia M. Stephen, Tony W. Wilson   +9 more
doaj   +1 more source

Multistage classification identifies altered cortical phase- and amplitude-coupling in Multiple Sclerosis

NeuroImage, 2022
Distinguishing groups of subjects or experimental conditions in a high-dimensional feature space is a common goal in modern neuroimaging studies. Successful classification depends on the selection of relevant features as not every neuronal signal ...
Marcus Siems, Johannes Tünnerhoff, Ulf Ziemann, Markus Siegel   +3 more
doaj   +1 more source

Contact Heat in Magnetoencephalography: A Systematic Review [PDF]

, 2023
Background: Contact heat is commonly used in experimental research to evoke brain activity, most frequently acquired with electroencephalography (EEG).
Worthen, Siân F., Raphael, Jon H., Worthen, Sian F, Khan, Salim, Duarte, Rui V., Raphael, Jon H, Graeme-Drury, Thomas J, Maden, Michelle, Vreugdenhil, Martin, Duarte, Rui V   +9 more
core   +1 more source

Graph theoretical analysis of resting magnetoencephalographic functional connectivity networks

Frontiers in Computational Neuroscience, 2013
Complex networks have been observed to comprise small-world properties, believed to represent an optimal organization of local specialization and global integration of information processing at reduced wiring cost.
Lindsay eRutter, Sreenivasan Rajamoni eNadar, Tom eHolroyd, Frederick W. Carver, Jose eApud, Daniel R Weinberger, Richard eCoppola, Richard eCoppola   +7 more
doaj   +1 more source

Dynamic filtering of static dipoles in magnetoencephalography [PDF]

, 2013
We consider the problem of estimating neural activity from measurements of the magnetic fields recorded by magnetoencephalography. We exploit the temporal structure of the problem and model the neural current as a collection of evolving current ...
Aston, John A. D., John A. D. Aston, Johansen, Adam M., Thomas E. Nichols, Wilfrid S. Kendall, Adam M. Johansen, Kendall, W. S., Sorrentino, Alberto, Nichols, Thomas E.   +8 more
core   +1 more source

Magnetoencephalography for Schizophrenia

Neuroimaging Clinics of North America, 2020
Schizophrenia (Sz) is a chronic mental disorder characterized by disturbances in thought (such as delusions and confused thinking), perception (hearing voices), and behavior (lack of motivation). The lifetime prevalence of Sz is between 0.3% and 0.7%, with late adolescence and early adulthood, the peak period for the onset of psychotic symptoms. Causal
J Christopher, Edgar, Anika, Guha, Gregory A, Miller   +2 more
openaire   +3 more sources