Faster P300 latency after smoking in visual but not auditory oddball tasks

被引:78
作者
Houlihan, ME [1 ]
Pritchard, WS [1 ]
Robinson, JH [1 ]
机构
[1] RJ REYNOLDS TOBACCO CO, PSYCHOPHYSIOL LAB, WINSTON SALEM, NC 27102 USA
关键词
information processing; smoking; nicotine; event-related potentials P300;
D O I
10.1007/BF02246577
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In two separate experiments, P300 was recorded from overnight-abstaining smokers before and after smoking. In the first experiment, 32 subjects counted forward by ones and counted backwards by threes upon presentation of a rare tone burst (20%) in a stream of standard tones. There were no changes in P300 amplitude or latency pre- to post-smoking (1.1-mg FTC nicotine-yield cigarette). In the second experiment, 29 subjects completed auditory and visual oddball tasks before smoking, after smoking a low nicotine-yield cigarette (0.05 mg), after smoking a higher nicotine-yield cigarette (1.1-mg), and after smoking a second 1.1-mg cigarette. In the visual oddball task, P300 latency decreased after smoking the first higher-yield cigarette relative to both pre-smoking and post smoking the lower-yield cigarette. This effect was maintained after smoking the second higher-yield cigarette. In the visual task, P300 amplitude increased after smoking the first higher-yield cigarette (from a lower baseline level) in a group of subjects with larger changes in tidal-breath CO but not in a group with smaller changes in CO. There were no effects of smoking on P300 amplitude or latency in the auditory tasks of either the first or second experiment.
引用
收藏
页码:231 / 238
页数:8
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