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magnetoencephalogram

   Also found in: Medical, Acronyms, Wikipedia 0.01 sec.
magnetoencephalogram [mag‚ned·ō·in′sef·ə·lə‚gram]
(biophysics)
A measurement of the brain's magnetic field. Abbreviated MEG.


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The EEG records preferentially the cranial potential landscape generated by currents flowing radially (normal to the cortical surface); the magnetoencephalogram (MEG) records those flowing tangentially.
Edwin May, Wanda Luke, Virginia Trask, and Thane Frivold provide an abstract of an experiment in which the root mean square phase shift in a percipient's magnetoencephalogram corresponded, not only to sinusoidal gratings presented to an agent, but also to "pseudostimuli" (control stimuli consisting of simple time markers during the experiment).
 
 
 
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