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Abstract Since the beginning of our work on the electrical activity of the cortex,1 we have attempted to distinguish between the different types of abnormal waves that are encountered in epilepsy. We have described the wave and spike of petit mal,2 the crescendo burst of fast waves of grand mal2 and the slow square waves and high voltage 6 per second waves of psychic equivalent seizures.3 Characteristic examples of these various formations have been published,2d but for ease of reference they are shown again in figure 1. It will be noted that there are two kinds of wave and spike activity: (1) the approximately 3 per second wave and spike rhythm of the true petit mal seizure which is commonly accompanied by clonic muscle jerks, synchronous with the 3 per second rhythm, and (2) the slow wave and spike formation which repeats approximately twice a second and References 1. Gibbs, F. A.; Davis, H., and Lennox, W. G.: The Electro-Encephalogram in Epilepsy and in Conditions of Impaired Consciousness , Arch. Neurol. & Psychiat. 34:1133 ( (Dec.) ) 1935. 2. Gibbs, F. A.; Lennox, W. G., and Gibbs, E. L.: The Electro-Encephalogram in Diagnosis and in Localization of Epileptic Seizures , Arch. Neurol. & Psychiat. 36:1225 ( (Dec.) ) 1936. 3. Gibbs, F. A.; Gibbs, E. L., and Lennox, W. G.: Cerebral Dysrhythmias of Epilepsy: Measures for Their Control , Arch. Neurol. & Psychiat. 39:298 ( (Feb.) ) 1938 4. Epilepsy: A Paroxysmal Cerebral Dysrhythmia , Brain 60:377 ( (Dec.) ) 1937. 5. Gibbs, F. A.: The Electro-Encephalogram in Epileptic Seizures , in Oppenheimer, C., and Pincussen, L.: Tabulae biologicae , The Hague, U. Junk, 1938, vol. 16, no. 2, p. 128. 6. Gibbs, Davis and Lennox.1 7. Gibbs, F. A.; Gibbs, E. L., and Lennox, W. G.: The Likeness of the Cortical Dysrhythmias of Schizophrenia and Psychomotor Epilepsy , Am. J. Psychiat. 95:255 ( (Sept.) ) 1938 8. footnotes 2 b and c. 9. Lennox, W. G.; Gibbs, F. A., and Gibbs, E. L.: Effect on the Electro-Encephalogram of Drugs and Conditions Which Influence Seizures , Arch. Neurol. & Psychiat. 36:1236 ( (Dec.) ) 1936. 10. Gibbs.2d 11. Gibbs, Gibbs and Lennox.2b 12. Lennox, Gibbs and Gibbs.3c 13. Vander Veer, A. H., and Reese, H. H.: Treatment of Schizophrenia with Insulin Shock , Am. J. Psychiat. 95:271 ( (Sept.) ) 1938.
Archives of Neurology & Psychiatry – American Medical Association
Published: Jun 1, 1939
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