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Article
December 7, 1979

Electroencephalographic Technique

Author Affiliations

USN National Naval Medical Center Bethesda, Md

JAMA. 1979;242(23):2558. doi:10.1001/jama.1979.03300230014018

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Abstract

To the Editor.—  Wiley and Eaglstein (242:455,1979) recently described seven children with calcinosis cutis caused by EEG electrode paste. The method of electrode placement at their hospital depends on a common technique that requires using an adhesive electrode paste that contains ground quartz as an abrasive and rubbing the area vigorously with acetone before applying the paste. This removes skin oils and as much of the stratum corneum as possible.In my opinion, the quality of EEG recording with the standard collodion technique of electrode placement is superior electrographically; it makes for a stronger and more reliable electrode bonding and is less likely to cause the lesion discussed by Wiley and Eaglstein. With the collodion technique, the electrode gel does not contain the quartz particles; it may be used without a calcium compound; and the technique of skin abrasion, when performed properly, uses a small metal tube for applying the

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