Investigations on the Basis of Rational Electrotherapy of Paretic Muscles. By Svend Clemmesen and Erik Skinhøj. Acta psychiatrica et neurologica, Supplementum XLIII. Translated from the Danish by Axel Andersen. Paper. Pp. 53, with 19 illustrations. Ejnar Munksgaard, Nørregade 6, København, K, 1947
"Electroencephalographic Study of Neuropsychiatric Disorders" is a review of the literature of electroencephalography up to 1944 and a general discussion of technical difficulties in performing this diagnostic test. Types of electrode placements and difficulties inherent in the so-called indifferent electrode are discussed. The ear is. considered a source of electrical activity from the nearby temporal lobe. Some of the artefacts that make interpretation of electroencephalograms difficult and quantitation of the procedure and its limitations are handled clearly.
In the author's series, over 20 per cent showed abnormal records. This is higher than in other series reported either in this country or abroad, and is probably explained by the