A mechanistic account of striatal dopamine function in human cognition: psychopharmacological studies with cabergoline and haloperidol

Behav Neurosci. 2006 Jun;120(3):497-517. doi: 10.1037/0735-7044.120.3.497.


The authors test a neurocomputational model of dopamine function in cognition by administering to healthy participants low doses of D2 agents cabergoline and haloperidol. The model suggests that DA dynamically modulates the balance of Go and No-Go basal ganglia pathways during cognitive learning and performance. Cabergoline impaired, while haloperidol enhanced, Go learning from positive reinforcement, consistent with presynaptic drug effects. Cabergoline also caused an overall bias toward Go responding, consistent with postsynaptic action. These same effects extended to working memory and attentional domains, supporting the idea that the basal ganglia/dopamine system modulates the updating of prefrontal representations. Drug effects interacted with baseline working memory span in all tasks. Taken together, the results support a unified account of the role of dopamine in modulating cognitive processes that depend on the basal ganglia.

Publication types

  • Clinical Trial
  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Attention / drug effects
  • Cabergoline
  • Choice Behavior / drug effects
  • Cognition / drug effects*
  • Computer Simulation
  • Corpus Striatum / drug effects
  • Corpus Striatum / metabolism*
  • Dopamine / metabolism*
  • Dopamine Agonists / pharmacology*
  • Dopamine Antagonists / pharmacology*
  • Ergolines / pharmacology*
  • Female
  • Generalization, Psychological / drug effects
  • Haloperidol / pharmacology*
  • Humans
  • Male
  • Memory, Short-Term / drug effects
  • Models, Neurological
  • Neuropsychological Tests
  • Probability Learning
  • Prolactin / blood
  • Young Adult


  • Dopamine Agonists
  • Dopamine Antagonists
  • Ergolines
  • Prolactin
  • Haloperidol
  • Cabergoline
  • Dopamine