ATYPICAL SEIZURES ELICITED BY ELECTRICAL STIMULATION OF THE CEREBRUM IN THE CAT

Abstract
Since the pioneer work of Fritsch and Hitzig1 in 1870 and of Ferrier2 in 1873, many investigators have stimulated the cerebral cortex of animals and of man. Most such experiments have been carried out with the brain exposed and the subject anesthetized, at least lightly, or controlled with local anesthesia. Talbert,3 in 1899, using a method and (according to a recent personal communication) the very electrodes devised by Ewald,4 reported the results of stimulation of the cortex of unanesthetized and unrestrained animals in whose skulls were implanted permanent electrodes. It is surprising that Talbert's work was for so long a time unappreciated, since work in this laboratory for several years5 has indicated the value of implanted electrodes in cortical stimulation. Convulsions elicited in unanesthetized and unrestrained animals by electrical stimulation of fixed cortical points6 were similar to jacksonian epileptic attacks in man. The animals

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