Results 191 to 200 of about 30,896 (211)
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Multiresolution MEG (magnetoencephalography) imaging by adaptive beamformer scanning
Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.03CH37439), 2004There is a tradeoff between the spatial resolution and the speed of beamformer MEG imaging method. For clinical purposes, source localization for large volumes of MEG/EEG data such as epileptic spike data needs to be performed quickly, accurately, and automatically.
D. Hwang +3 more
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Magnetoencephalography (MEG): Its Application to Moyamoya Disease
2010The re-build-up phenomenon in electroencephalography (EEG) was first described as a pathognomonic phenomenon of moyamoya disease in 1977 (in Japanese) [1] and in 1979 (in English) [2]. Slow wave discharges are known to “build-up” during hyperventilation used as a routine provocation method in clinical EEG.
Nobukazu Nakasato +2 more
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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
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Source space localization technique for Magnetoencephalography(MEG) source reconstruction
International Journal of Applied Electromagnetics and Mechanics, 2004Magnetoencephalography (MEG) source reconstruction problems suffer from their own ill-posed characteristics, especially when a cortically distributed source model is used. This is because many variables have to be determined using small amounts of measured data, and this leads to a large computational cost.
Im, Chang Hwan +3 more
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[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
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[High-resolution EEG (HR-EEG) and magnetoencephalography (MEG)].
Neuro-Chirurgie, 2008HR-EEG (high resolution EEG) and MEG (magnetoencephalography) allow the recording of cerebral electromagnetic activities with excellent temporal resolution. These tools have also considerably progressed in spatial resolution and now constitute real methods of Electric and Magnetic Source Imaging.
M, Gavaret, J-M, Badier, P, Chauvel
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Ideasthetic Imagining – Mapping the Brain’s Microstates using Magnetoencephalography (MEG)
TEXTThis contribution focuses on an exploratory study, titled ‘Ideasthetic Imagining – Mapping the Brain’s Microstates using Magnetoencephalography (MEG)’, conducted at Swinburne University of Technology (2023: Melbourne, Australia). The study investigates neural activity in participants’ brains while undertaking a creative writing workshop.
Julia Prendergast +2 more
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Towards Biomarkers for Autism Spectrum Disorder: Contributions of Magnetoencephalography (MEG)
There is no simple blood test for autism. Consequently, much attention has been paid to identifying noninvasive biomarkers using imaging (e.g., Magnetic resonance imaging, MRI) and electrophysiological (e.g., electroencephalography, EEG and magnetoencephalography, MEG) methods.Timothy P L, Roberts +4 more
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Magnetoencephalography (MEG) Studies of Speech Production
Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders, 2003Margaret Greenwald, Susan Bowyer
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[Investigation of the Cerebral Cortex Using Magnetoencephalography(MEG)].
Brain and nerve = Shinkei kenkyu no shinpo, 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.
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