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EFFECT ON ELECTRICALLY INDUCED CONVULSIONS OF THE NUMBER OF PREVIOUS TREATMENTS IN A SERIES

EFFECT ON ELECTRICALLY INDUCED CONVULSIONS OF THE NUMBER OF PREVIOUS TREATMENTS IN A SERIES Abstract ANYONE who gives electric shock treatments is bound to have observed that the convulsion threshold rises successively during a series of treatments and then seems gradually to become stable. Some weeks after the final treatment the convulsion threshold is found to have resumed its original level. Kalinowsky1 refers to this phenomenon, which had been observed by Elsberg and Stookey2 before the introduction of electric shock therapy. Bárány and Stein-Jensen3 found the same tendency in animals. Toman and Goodman,4 in their experiments with animals, carefully studied the inhibitory period during some hours immediately after the electroconvulsions. As I had observed that the duration and intensity of the convulsive seizure appeared to decrease, while the convulsive threshold was increased during series of shock treatments, I thought it worth while to study these effects more closely. METHOD AND MATERIAL First, the duration of the convulsions was calculated for a References 1. Kalinowsky, L. B.: Epilepsy and Convulsive Therapy , A. Res. Nerv. & Ment. Dis., Proc. 26:175-183, 1947. 2. Elsberg, C. A., and Stookey, B.: Studies on Epilepsy: I. Convulsions Experimentally Produced in Animals Compared with Convulsive States in Man , Arch. Neurol. & Psychiat. 9:613-626, 1923. 3. Bárány, E. H., and Stein-Jensen, E.: Mode of Action of Anticonvulsant drugs on Electrically Induced Convulsions in the Rabbit , Arch. internat. pharmacodyn. 73:1-47, 1946. 4. Toman, J. E. P., and Goodman, L. S.: Conditions Modifying Convulsions in Animals , A. Res. Nerv. & Ment. Dis., Proc. 26:141-162, 1947. 5. Holmberg, G., and Thesleff, S.: Succinyl-Choline-Iodide as a Muscular Relaxant in Electroshock Therapy , Am. J. Psychiat. 108:842-846, 1952. 6. Holmberg, G.: Influence of Oxygen Administration on Convulsive Activity in Electroshock Therapy , Acta psychiat. et neurol. scandinav. 1954, to be published. 7. Holmberg, G.: Factor of Hypoxemia in Electroshock Therapy , Am. J. Psychiat. 110: 115-118, 1953. 8. Hartelius, H.: Cerebral Changes Following Electrically Induced Convulsions , Acta psychiat. et neurol. scandinav. (Supp. 77) , 1952. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png A.M.A. Archives of Neurology & Psychiatry American Medical Association

EFFECT ON ELECTRICALLY INDUCED CONVULSIONS OF THE NUMBER OF PREVIOUS TREATMENTS IN A SERIES

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Publisher
American Medical Association
Copyright
Copyright © 1954 American Medical Association. All Rights Reserved.
ISSN
0096-6886
DOI
10.1001/archneurpsyc.1954.02320410081007
Publisher site
See Article on Publisher Site

Abstract

Abstract ANYONE who gives electric shock treatments is bound to have observed that the convulsion threshold rises successively during a series of treatments and then seems gradually to become stable. Some weeks after the final treatment the convulsion threshold is found to have resumed its original level. Kalinowsky1 refers to this phenomenon, which had been observed by Elsberg and Stookey2 before the introduction of electric shock therapy. Bárány and Stein-Jensen3 found the same tendency in animals. Toman and Goodman,4 in their experiments with animals, carefully studied the inhibitory period during some hours immediately after the electroconvulsions. As I had observed that the duration and intensity of the convulsive seizure appeared to decrease, while the convulsive threshold was increased during series of shock treatments, I thought it worth while to study these effects more closely. METHOD AND MATERIAL First, the duration of the convulsions was calculated for a References 1. Kalinowsky, L. B.: Epilepsy and Convulsive Therapy , A. Res. Nerv. & Ment. Dis., Proc. 26:175-183, 1947. 2. Elsberg, C. A., and Stookey, B.: Studies on Epilepsy: I. Convulsions Experimentally Produced in Animals Compared with Convulsive States in Man , Arch. Neurol. & Psychiat. 9:613-626, 1923. 3. Bárány, E. H., and Stein-Jensen, E.: Mode of Action of Anticonvulsant drugs on Electrically Induced Convulsions in the Rabbit , Arch. internat. pharmacodyn. 73:1-47, 1946. 4. Toman, J. E. P., and Goodman, L. S.: Conditions Modifying Convulsions in Animals , A. Res. Nerv. & Ment. Dis., Proc. 26:141-162, 1947. 5. Holmberg, G., and Thesleff, S.: Succinyl-Choline-Iodide as a Muscular Relaxant in Electroshock Therapy , Am. J. Psychiat. 108:842-846, 1952. 6. Holmberg, G.: Influence of Oxygen Administration on Convulsive Activity in Electroshock Therapy , Acta psychiat. et neurol. scandinav. 1954, to be published. 7. Holmberg, G.: Factor of Hypoxemia in Electroshock Therapy , Am. J. Psychiat. 110: 115-118, 1953. 8. Hartelius, H.: Cerebral Changes Following Electrically Induced Convulsions , Acta psychiat. et neurol. scandinav. (Supp. 77) , 1952.

Journal

A.M.A. Archives of Neurology & PsychiatryAmerican Medical Association

Published: May 1, 1954

References