, Volume 211, Issue 1, pp 87–98

Contributions of the orbitofrontal cortex to impulsive choice: interactions with basal levels of impulsivity, dopamine signalling, and reward-related cues

Original Investigation

DOI: 10.1007/s00213-010-1871-2

Cite this article as:
Zeeb, F.D., Floresco, S.B. & Winstanley, C.A. Psychopharmacology (2010) 211: 87. doi:10.1007/s00213-010-1871-2



Individual differences in impulsive decision-making may be critical determinants of vulnerability to impulse control disorders and substance abuse, yet little is known of their biological or behavioural basis. The orbitofrontal cortex (OFC) has been heavily implicated in the regulation of impulsive decision-making. However, lesions of the OFC in rats have both increased and decreased impulsivity in delay-discounting paradigms, where impulsive choice is defined as the selection of small immediate over larger delayed rewards.


Reviewing the different methods used, we hypothesized that the effects of OFC inactivation on delay discounting may be critically affected by both subjects’ baseline level of impulsive choice and the presence or absence of a cue to bridge the delay between selection and delivery of the large reward.


Here, we show that OFC inactivation increased impulsive choice in less impulsive rats when the delay was cued, but decreased impulsive choice in highly impulsive rats in an uncued condition.


Providing explicit environmental cues to signal the delay-to-reinforcement appears to change the way in which the OFC is recruited in the decision-making process in a baseline-dependent fashion. This change may reflect activation of the dopamine system, as intra-OFC infusions of dopamine receptor antagonists increased impulsive choice but only when the delay was cued.


Delay discounting Dopamine Eticlopride Impulsivity Incentive salience SCH 23390 Antagonist Baclofen Muscimol Prefrontal cortex Behaviour Rat 

Supplementary material

213_2010_1871_MOESM1_ESM.gif (26 kb)
Fig. S1Effects of intra-OFC infusion of DA receptor antagonists on choice behaviour in the Cue group. Visual comparison of the data indicate that high impulsive (HI) animals were less affected by infusions of either eticlopride (a) or SCH 23390 (b), whereas both eticlopride (c) or SCH 23390 (d) infusions increased impulsive choice in low impulsive (LI) animals. However, overall, the effects of eticlopride and SCH 23390 in HI or LI rats did not differ significantly from each other as analysed by ANOVA. Data shown are mean ± SEM (GIF 25 kb)
213_2010_1871_Fig2_ESM.tif (8.8 mb)
High resolution image (TIFF 8963 kb)

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of PsychologyUniversity of British ColumbiaVancouverCanada

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