CONVULSIONS PRODUCED BY ELECTRICAL STIMULATION OF THE CEREBRAL CORTEX OF UNANESTHETIZED CATS

Abstract
The production of convulsions in animals has been accomplished in several ways. Dandy and Elman,1in discussing experimental production of convulsions, listed six methods, most of which have been used extensively in experiments of this kind. One of these methods, electrical stimulation of the nervous system, has had perhaps a less extensive use than the others. Various investigators, however, have stimulated the cortex of different animals for the specific purpose of producing convulsive seizures. The earliest of these were Fritsch and Hitzig,2who used a galvanic current, and Ferrier,3who faradized the cortex of dogs, cats and rabbits. Since then, the production of convulsions in various animals by electrical stimulation of the cortex has been reported sporadically (Munk4and Sherrington,5in monkeys; Coombs6and Gibbs and Gibbs,7in cats; Tower and Hines,8in cats and monkeys, and others). Recently Chaffee and Light

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