Psychopharmacology

, Volume 229, Issue 2, pp 345–355

Greater risk sensitivity of dorsolateral prefrontal cortex in young smokers than in nonsmokers

  • Adriana Galván
  • Tom Schonberg
  • Jeanette Mumford
  • Milky Kohno
  • Russell A. Poldrack
  • Edythe D. London
Original Investigation

DOI: 10.1007/s00213-013-3113-x

Cite this article as:
Galván, A., Schonberg, T., Mumford, J. et al. Psychopharmacology (2013) 229: 345. doi:10.1007/s00213-013-3113-x

Abstract

Rationale

Despite a national reduction in the prevalence of cigarette smoking, ~19 % of the adult US population persists in this behavior, with the highest prevalence among 18–25-year-olds. Given that the choice to smoke imposes a known health risk, clarification of brain function related to decision-making, particularly involving risk-taking, in smokers may inform prevention and smoking cessation strategies.

Objectives

This study aimed to compare brain function related to decision-making in young smokers and nonsmokers.

Methods

The Balloon Analogue Risk Task (BART) is a computerized risky decision-making task in which participants pump virtual balloons, each pump associated with an incremental increase in potential payoff on a given trial but also with greater risk of balloon explosion and loss of payoff. We used this task to compare brain activation associated with risky decision-making in smokers (n = 18) and nonsmokers (n = 25), while they performed the BART during functional magnetic resonance imaging (fMRI). The participants were young men and women, 17–21 years of age.

Results

Risk level (number of pumps) modulated brain activation in the right dorsolateral and ventrolateral prefrontal cortices more in smokers than in nonsmokers, and smoking severity (Heaviness of Smoking Index) was positively related to this modulation in an adjacent frontal region.

Conclusions

Given evidence for involvement of the right dorsolateral and ventrolateral prefrontal cortices in inhibitory control, these findings suggest that young smokers have a different contribution of prefrontal cortical substrates to risky decision-making than nonsmokers. Future studies are warranted to determine whether the observed neurobiological differences precede or result from smoking.

Keywords

NicotineFunctional MRIPrefrontal cortexDecision-making

Supplementary material

213_2013_3113_MOESM1_ESM.pdf (57 kb)
ESM 1(PDF 57 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Adriana Galván
    • 1
    • 2
  • Tom Schonberg
    • 3
  • Jeanette Mumford
    • 3
    • 4
  • Milky Kohno
    • 5
  • Russell A. Poldrack
    • 3
    • 4
    • 6
  • Edythe D. London
    • 2
    • 5
    • 7
    • 8
  1. 1.Department of PsychologyUniversity of California, Los AngelesLos AngelesUSA
  2. 2.Brain Research InstituteUniversity of California, Los AngelesLos AngelesUSA
  3. 3.Imaging Research CenterUniversity of Texas, AustinAustinUSA
  4. 4.Department of PsychologyUniversity of Texas, AustinAustinUSA
  5. 5.Department of Psychiatry and Biobehavioral SciencesUniversity of California, Los AngelesLos AngelesUSA
  6. 6.Department of NeurobiologyUniversity of Texas, AustinAustinUSA
  7. 7.Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesUSA
  8. 8.Semel Institute for Neuroscience and Human Behavior, David Geffen School of MedicineUniversity of California, Los AngelesLos AngelesUSA