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Effects of nicotine on perceptual speed

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Abstract

Two experiments investigating the effects of nicotine on performance in the inspection time (IT) procedure are reported. Experiment 1 compared ITs in smoking (0.8 mg nicotine cigarette), sham-smoking, and no-smoking conditions. IT was significantly shorter in the smoking condition as compared to both the no-smoking or sham-smoking conditions, suggesting that nicotine enhances early information processing. This result is of particular interest because of the correlation between IT and IQ reported in previous experiments. The nicotine related decrease in IT raises the possibility that nicotine enhances at least a subset of the physiological processes underlying intellectual performance. Experiment 2 examined the persistence of this nicotine related enhancement in IT, and investigated the effects of nicotine across 480 IT trials. Results suggested that ITs derived from the last third of the 480 trials were significantly shorter in the 0.8 mg cigarette condition than in no-smoking condition. The results from these two experiments, taken together with recent work examining the effects of nicotine on the string length measure of AEP waveform complexity and Hick decision time (DT), and studies investigating cognitive functioning and cholinergic system dysfunction in dementia, suggest a role of the cholinergic system in intellectual performance.

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Authors and Affiliations

  1. Cognitive Psychophysiology Laboratory, The Medical School, University of Queensland, Edith Cavell Building, QLD 4006, Herston, Australia

    C. Stough

  2. Department of Psychology, University of Auckland, Private Bag 92019, Auckland, New Zealand

    G. Mangan, T. Bates, B. Kerkin & O. Pellett

  3. Department of Psychology, University of Adelaide, PO Box 498, 5001, GPO Adelaide, South Australia, Australia

    N. Frank

Authors
  1. C. Stough
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  2. G. Mangan
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  3. T. Bates
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  4. B. Kerkin
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  5. O. Pellett
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  6. N. Frank
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Stough, C., Mangan, G., Bates, T. et al. Effects of nicotine on perceptual speed. Psychopharmacology 119, 305–310 (1995). https://doi.org/10.1007/BF02246296

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  • DOI: https://doi.org/10.1007/BF02246296

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