An event-related potential study on the effects of cannabis on emotion processing

Lucy J. Troup, Stephanie Bastidas, Maia T. Nguyen, Jeremy A. Andrzejewski, Matthew Bowers, Jason S. Nomi

Research output: Contribution to journalArticle

Abstract

The effect of cannabis on emotional processing was investigated using event-related potential paradigms (ERPs). ERPs associated with emotional processing of cannabis users, and non-using controls, were recorded and compared during an implicit and explicit emotional expression recognition and empathy task. Comparisons in P3 component mean amplitudes were made between cannabis users and controls. Results showed a significant decrease in the P3 amplitude in cannabis users compared to controls. Specifically, cannabis users showed reduced P3 amplitudes for implicit compared to explicit processing over centro-parietal sites which reversed, and was enhanced, at fronto-central sites. Cannabis users also showed a decreased P3 to happy faces, with an increase to angry faces, compared to controls. These effects appear to increase with those participants that self-reported the highest levels of cannabis consumption. Those cannabis users with the greatest consumption rates showed the largest P3 deficits for explicit processing and negative emotions. These data suggest that there is a complex relationship between cannabis consumption and emotion processing that appears to be modulated by attention.

Original languageEnglish
Article numbere0149764
JournalPLoS ONE
Volume11
Issue number2
DOIs
Publication statusPublished - 29 Feb 2016
Externally publishedYes

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Cannabis
emotions
Evoked Potentials
Emotions
Processing

Keywords

  • Adolescent
  • Adult
  • Cannabis
  • Case-Control Studies
  • Emotions
  • Empathy
  • Evoked Potentials
  • Female
  • Humans
  • Male
  • Middle Aged
  • Reaction Time
  • Young Adult
  • Journal Article
  • Research Support, Non-U.S. Gov't

Cite this

Troup, L. J., Bastidas, S., Nguyen, M. T., Andrzejewski, J. A., Bowers, M., & Nomi, J. S. (2016). An event-related potential study on the effects of cannabis on emotion processing. PLoS ONE, 11(2), [e0149764]. https://doi.org/10.1371/journal.pone.0149764
Troup, Lucy J. ; Bastidas, Stephanie ; Nguyen, Maia T. ; Andrzejewski, Jeremy A. ; Bowers, Matthew ; Nomi, Jason S. / An event-related potential study on the effects of cannabis on emotion processing. In: PLoS ONE. 2016 ; Vol. 11, No. 2.
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Troup, LJ, Bastidas, S, Nguyen, MT, Andrzejewski, JA, Bowers, M & Nomi, JS 2016, 'An event-related potential study on the effects of cannabis on emotion processing' PLoS ONE, vol. 11, no. 2, e0149764. https://doi.org/10.1371/journal.pone.0149764

An event-related potential study on the effects of cannabis on emotion processing. / Troup, Lucy J.; Bastidas, Stephanie; Nguyen, Maia T.; Andrzejewski, Jeremy A.; Bowers, Matthew; Nomi, Jason S.

In: PLoS ONE, Vol. 11, No. 2, e0149764, 29.02.2016.

Research output: Contribution to journalArticle

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AU - Bastidas, Stephanie

AU - Nguyen, Maia T.

AU - Andrzejewski, Jeremy A.

AU - Bowers, Matthew

AU - Nomi, Jason S.

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Troup LJ, Bastidas S, Nguyen MT, Andrzejewski JA, Bowers M, Nomi JS. An event-related potential study on the effects of cannabis on emotion processing. PLoS ONE. 2016 Feb 29;11(2). e0149764. https://doi.org/10.1371/journal.pone.0149764