magnetoencephalography

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magnetoencephalography

 (MEG) [mag-ne″to-en-sef″ah-log´ra-fe]
a noninvasive diagnostic technique that directly measures the magnetic fields produced by electrical currents in the brain. A vaultlike device is necessary to ensure that the accuracy of the test is not affected by interference from magnetic fields produced by electrical wires and radio and television transmissions.

mag·ne·to·en·ceph·a·log·ra·phy

(mag-nē'tō-en-sef'ă-log'ră-fē),
The process of recording the brain's magnetic field.

magnetoencephalography

(măg-nē′tō-ĕn-sĕf′ə-lŏg′rə-fē)
n. Abbr. MEG
A diagnostic imaging technique that detects and records magnetic fields produced by electrical activity in the brain.

mag·ne′to·en·ceph′a·lo·graph′ic (-ə-lə-grăf′ĭk, -ə-lō-) adj.

magnetoencephalography

The recording of the brain’s magnetic field using the obsolete magnetoencephalograph; it is identical topographically to the ionic field recorded by the electroencephalograph.

magnetoencephalography

Biomagnetism Neuroimaging An imaging technique used to evaluate subtle fluctuations in the electrical magnetic field produced by the body; MEG measures the brain's electrical activity by evaluating the magnetic field associated with neuronal activity. Cf Electroencephalography, PET scanning.

magnetoencephalography (MEG) (mag·nēˈ·tō·en·seˈ·f·läˑ·gr·fē),

n noninvasive method of measuring magnetic fields created by the electrical activity in the brain.
References in periodicals archive ?
Kuroda, "Medial Prefrontal Cortex and Anterior Cingulate Cortex in the Generation of Alpha Activity Induced by Transcendental Meditation: A Magnetoencephalographic Study," Acta Medica Okayama 60, no.
Magnetoencephalographic studies of functional organization and plasticity of the human auditory cortex.
Magnetoencephalographic studies have also shown a dampening of the alpha activity within 200 ms after the appearance of a visual stimulus and also during visual imagery (Hari, Salmelin, Makela, Salenius & Helle, 1997).
It is very expensive, as are the customized cradles designed to accommodate a newborn's head and used to collect magnetoencephalographic data.
Magnetoencephalographic scans were performed 5 seconds after each move to measure focal gamma bursts in the 20- to 40-Hz range.
Salmelin, Helenius, and Service (2000) have published a review of a series of magnetoencephalographic (MEG) experiments aimed at identifying cortical areas and time windows relevant to or even critical for fluent reading.
The addition of a magnetoencephalographic (MEG) scanner from Elekta, offering excellent performance in the temporal domain, will put the CBU in a highly competitive situation to meet the challenge of relating brain activity to normal and disordered cognitive function.
Hari, "Removal of magnetoencephalographic artifacts with temporal signal-space separation: demonstration with single-trial auditory-evoked responses," Human Brain Mapping, vol.
Graph theoretical analysis of magnetoencephalographic functional connectivity in Alzheimer's disease.