Abstract
During recent years so much has been written about convulsive therapy that it would seem rash to burden still further the very extensive literature on this subject. Nevertheless, in spite of the admirable work that has been done, it cannot be said that the implications of convulsive treatment are fully understood, nor that the fullest possible use has been made of this treatment for research into the pathophysiology of epilepsy. Furthermore, the recent introduction by Cerletti and Bini (1) of a method of treatment with electrically produced epileptic fits has increased still further the scope of research. I have had at my disposal case material provided by the treatment of various forms of mental disorder with cardiazol for more than two years, and with the electrical method in collaboration with Mr. Grey Walter for about six months. This has enabled me to conduct certain investigations of a sort that have received little or no attention hitherto, and to make observations covering various aspects of the physiology and psychopathology of induced epileptic states.

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