"Magnetoencephalography" is a descriptor in the National Library
of Medicine's controlled vocabulary thesaurus, MeSH (Medical
Subject Headings). Descriptors are arranged in a hierarchical
structure, which enables searching at various levels of
specificity. The measurement of magnetic fields over the head
generated by electric currents in the brain. As in any
electrical conductor, electric fields in the brain are
accompanied by orthogonal magnetic fields. The measurement of
these fields provides information about the localization of
brain activity which is complementary to that provided by
ELECTROENCEPHALOGRAPHY. Magnetoencephalography may be used alone
or together with electroencephalography, for measurement of
spontaneous or evoked activity, and for research or clinical
purposes. Below are MeSH descriptors whose meaning is more
general than "Magnetoencephalography". Below are MeSH
descriptors whose meaning is more specific than
"Magnetoencephalography". This graph shows the total number of
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