Results 191 to 200 of about 19,445 (231)
Some of the next articles are maybe not open access.
2009
Magnetoencephalography (MEG) encompasses a family of non-contact, non-invasive techniques for detecting the magnetic field generated by the electrical activity of the brain, for analyzing this MEG signal and for using the results to study brain function.
openaire +4 more sources
Magnetoencephalography (MEG) encompasses a family of non-contact, non-invasive techniques for detecting the magnetic field generated by the electrical activity of the brain, for analyzing this MEG signal and for using the results to study brain function.
openaire +4 more sources
NeuroImageRecent advancements in optically pumped magnetometer magnetoencephalography (OPM-MEG) make it a promising alternative to conventional SQUID-MEG systems.
Pan Liao, David White, Bingjiang Lyu
exaly +2 more sources
Magnetoencephalography (MEG) and Magnetic Source Imaging (MSI)
The Neurologist, 2004Real-time, direct assessment of brain electrophysiology is critical for noninvasive functional mapping and for the identification of paroxysmal epileptiform abnormalities in the evaluation of patients for epilepsy surgery. Historically, electroencephalography (EEG) and evoked potentials (EPs) have performed these functions. However, both often required
James W, Wheless +6 more
openaire +2 more sources
Magnetoencephalography (MEG) and other neurophysiological investigations
2013Cortical generators of epileptic and certain physiological activity can be localized noninvasively by magnetoencephalography (MEG). MEG detects weak magnetic fields produced by the postsynaptic currents of pyramidal cortical cells in sulcal walls. Unlike EEG, MEG signals are not distorted by edema or bone defects, and unlike fMRI, abnormal hemodynamics
Paetau Ritva, Paetau Ritva
openaire +2 more sources
Localisation of Epileptic Foci with Multichannel Magnetoencephalography, MEG
1995With the development of multichannel magnetoencephalographs biomagnetic signals can be recorded over large areas at the same time. It allows determination of the magnetic field outside the head generated by spontaneous epileptic discharges. From the maxima of outward and inward magnetic fluxes the locations of the sources of epileptic discharges can be
E, Knutsson, L, Gransberg
openaire +2 more sources
Evaluation of neuronal effects of electroconvulsive therapy by magnetoencephalography (MEG)
Progress in Neuro-Psychopharmacology and Biological Psychiatry, 20001. Interictal spontaneous MEG was investigated in five male patients with major depressive disorder (according to DSM IV) treated with right hemispheric ECT over a period of five weeks. Spontaneous MEG-activity was also recorded in five male patients treated with tricyclic antidepressants during the same time period. 2. The analysis of slow (0-7Hz) and
W, Sperling, P, Martus, M, Alschbach
openaire +2 more sources
Magnetoencephalography (MEG) in Epilepsy Surgery
1997Whole-scalp MEG has proved to be a suitable tool for preoperative evaluation of patients suffering from drug-resistant focal epilepsy. MEG recordings are non-invasive and safe for the subject, and no demanding preparations of the patient are needed before measurement. The MEG recordings may reveal several epileptic foci, and the order of activation can
openaire +2 more sources
Frontier and hot topics in Magnetoencephalography(MEG) in neurological diseases
Neurological SciencesMagnetoencephalography (MEG), a non-invasive neuroimaging technique with millisecond temporal resolution and millimeter spatial resolution, is an essential tool for investigating neurological disorders. This study conducted a systematic analysis of 4,040 relevant publications from the Web of Science database (2000-2024) using VOSviewer and CiteSpace to
Nanjie Chen +4 more
openaire +2 more sources
[Functional imaging of the brain. Magnetoencephalography (MEG)].
Der Radiologe, 1994Magnetencephalography (MEG) is a new diagnostic tool for the exact localization of the biomagnetic sources of the electrical activity of the brain. The extremely weak magnetic fields are generated by the postsynaptic activity of the neurons, acting like current dipoles. They are measured with a SQUID (superconducting quantum interference device).
W J, Huk, J, Vieth
openaire +1 more source
Investigation of the Cerebral Cortex Using Magnetoencephalography(MEG)
BRAIN and NERVE, 2015Cortical neurons are excited by signals from the thalamus that are conducted via thalamocortical fibers. As the cortex receives these signals, electric currents are conducted through the apical dendrites of pyramidal cells in the cerebral cortex. These electric currents generate magnetic fields.
openaire +3 more sources