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Science 13 April 1973:
Vol. 180. no. 4082, pp. 212 - 214
DOI: 10.1126/science.180.4082.212
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Articles

Tobacco and Evoked Potential

R. A. Hall 1, M. Rappaport 2, H. K. Hopkins 2, and R. Griffin 2

1 Santa Clara County Mental Health Services, Stanford University School of Medicine, and Institute for Medical Research, San Jose, California 95128
2 Agnews State Hospital, San Jose, California 95114

Significant changes were found in two indices of the averaged visual evoked potentials in nine smokers after 12 and 36 hours of abstinence and after resumption of smoking. There was a decrease of the amplitude envelope accompanying withdrawal and an increase with resumption of smoking. These changes are consistent with the contention that tobacco increases arousal. Amplitude changes were found in a specific component of the evoked potential occurring between 100 and 125 milliseconds after the onset of the flash. The latter changes suggest the possibility that smoking selectively enhances the perceptiont of weak stimuli.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)