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Neuropathological Correlates of Low-Voltage EEG Foci
Robert B. Aird, MD;
Makoto Shimizu, MD
Arch Neurol. 1970;22(1):75-80.
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| Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings. |
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FOLLOWING the initial exploratory period of electroencephalography, it became obvious that EEG, as a clinical diagnostic technique, could not differentiate between lesions on the basis of their pathological type. Nevertheless, it was apparent that the majority of focal processes were associated with high-voltage, slow-wave, or spiking activity and that, contrary to this, some foci were associated with low voltages. Most epileptic foci and tumors, for example, are of the high-voltage type. Because such lesions are also commonly associated with mirror foci and generalized slow-wave activity,1 which vary in prominence as the primary focus waxes and wanes, they have been referred to by some authors as "active" or "discharging" foci. Opposed to this have been the "inactive" or "quiescent" foci, characterized by areas of relatively low potential and associated with sizeable cortical processes, such as degenerative lesions, cysts, and cerebral gliosis.
Recognition of focal areas of low voltage, associated
. . . [Full Text PDF of this Article]
Author Affiliations
San Francisco; Tokyo
From the Department of Neurology and the Electroencephalographic Laboratory, University of California Medical Center, San Francisco. Dr. Shimizu is now at the Department of Neuropsychiatry, Jikei University, Minato-ku, Tokyo.
Footnotes
Submitted for publication June 30, 1969; accepted Aug 9.
Read before the 94th annual meeting of the American Neurological Association, Los Angeles, June 11, 1969.
Reprint requests to Department of Neurology, University of California Medical Center, San Francisco 94122 (Dr. Aird).
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