Many electroencephalographic studies have been conducted on encephalitis; those prior to 1956 are reviewed in Radermecker's excellent monograph.1 The usefulness of this technique for the study of encephalitis is reconfirmed by numerous recent reports.2-44
Our approach has been somewhat different from that of Radermecker; we have concentrated our attention on common, relatively mild, and usually nonfatal types of encephalitis in which the symptomatology is variable and the pathological process largely reversible. Our efforts have been directed toward developing serviceable standards for diagnosis and prognosis in such cases.
Our electroencephalographic technique differs from that of most other electroencephalographers, not because we have wished to differ but because without long monopolar recordings and sleep we found that we missed much of the phenomenology of epilepsy. In our opinion bipolar recordings have the following disadvantages: (1) they subtract the activity of one area from another and thus reduce voltages, sometimes to
F. A. GIBBS, E. L. GIBBS, H. W. SPIES, P. R. CARPENTER. Common Types of Childhood EncephalitisElectroencephalographic and Clinical Relationships. Arch Neurol. 1964;10(1):1–11. doi:10.1001/archneur.1964.00460130005001