THE INFLUENCE OF VISUAL AND AUDITORY STIMULI ON THE ELECTROENCEPHALOGRAPHIC TRACING OF PETIT MAL

ROBERT S. SCHWABAuthors Info & Affiliations

Publication: American Journal of Psychiatry

Volume 97, Number 6

https://doi.org/10.1176/ajp.97.6.1301

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Abstract

1. Light stimuli affect the alpha rhythm according to the "all or none" law.

2. Light stimuli have a delayed reaction time in short petit-mal attacks.

3. Light stimuli are not perceived in long petit-mal attacks.

4. Both light and sound stimuli tend to terminate moderately severe petit-mal seizures-the sound being much more effective.

5. When both fail to provoke a response, unconsciousness may be presumed.

6. This method of determining the impairment of consciousness may be useful in:

(a) Estimating the severity of petit-mal seizures.

(b) The effectiveness of anticonvulsant therapy on the spells.

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Information & Authors

Information

Published In

American Journal of Psychiatry

Volume 97 • Number 6 • May 1941

Pages: 1301 - 1312

History

Published in print: May 1941

Published online: 1 April 2006

Authors

Details

ROBERT S. SCHWAB

The Department of Neurology of the Harvard Medical School and the Electroencephalographic Laboratory of the Massachusetts General Hospital, Boston, Massachusetts.

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THE INFLUENCE OF VISUAL AND AUDITORY STIMULI ON THE ELECTROENCEPHALOGRAPHIC TRACING OF PETIT MAL

Abstract

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