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Effects of nicotine on response inhibition and interference control

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Abstract

Nicotine is a cholinergic agonist with known pro-cognitive effects in the domains of alerting and orienting attention. However, its effects on attentional top-down functions such as response inhibition and interference control are less well characterised. Here, we investigated the effects of 7 mg transdermal nicotine on performance on a battery of response inhibition and interference control tasks. A sample of N = 44 healthy adult non-smokers performed antisaccade, stop signal, Stroop, go/no-go, flanker, shape matching and Simon tasks, as well as the attentional network test (ANT) and a continuous performance task (CPT). Nicotine was administered in a within-subjects, double-blind, placebo-controlled design, with order of drug administration counterbalanced. Relative to placebo, nicotine led to significantly shorter reaction times on a prosaccade task and on CPT hits but did not significantly improve inhibitory or interference control performance on any task. Instead, nicotine had a negative influence in increasing the interference effect on the Simon task. Nicotine did not alter inter-individual associations between reaction times on congruent trials and error rates on incongruent trials on any task. Finally, there were effects involving order of drug administration, suggesting practice effects but also beneficial nicotine effects when the compound was administered first. Overall, our findings support previous studies showing positive effects of nicotine on basic attentional functions but do not provide direct evidence for an improvement of top-down cognitive control through acute administration of nicotine at this dose in healthy non-smokers.

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Notes

  1. Further support comes from a re-analysis of our previously published data (Polner et al. 2015) from a sample of N = 440: There were significant correlations between congruent RT and incongruent/no-go error rate for the saccade (r = −.25, p < .001), flanker (r = −.18, p < .001) and go/no-go (r = −.46, p < .001) but not the Simon task (r = .05, p = .22). Stroop data from that study were not available on an individual trial level and were thus not included in this re-analysis.

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Acknowledgements

We would like to thank Isabel Dietrich, Hannah-Christine Faber, Alena Grimm and Moritz Esser for assistance with data collection. Nadine Petrovsky was supported by a Gielen-Leyendecker Fellowship. Veena Kumari gratefully acknowledges a Humboldt Research Award from the Humboldt Foundation. The study received no further grant from any funding agency in the public, commercial or not-for-profit sectors.

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Correspondence to Ulrich Ettinger.

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Ulrich Ettinger, Eliana Faiola, Anna Kasparbauer, Nadine Petrovsky, Raymond Chan, Roman Liepelt and Veena Kumari declare that they have no conflict of interest.

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Ettinger, U., Faiola, E., Kasparbauer, AM. et al. Effects of nicotine on response inhibition and interference control. Psychopharmacology 234, 1093–1111 (2017). https://doi.org/10.1007/s00213-017-4542-8

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  • DOI: https://doi.org/10.1007/s00213-017-4542-8

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