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Dopamine D2/D3 receptor binding in the anterior cingulate cortex and executive functioning.

Ville Lumme1, Sargo Aalto, Tuula Ilonen

  • 1Turku PET Centre, University of Turku, c/o Turku University Central Hospital, PO Box 52, FIN-20521 Turku, Finland.

Psychiatry Research
|August 9, 2007
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Dopamine D(2)/D(3) receptor binding in the right anterior cingulate cortex is linked to executive functioning. Higher receptor availability correlated with better performance on the Wisconsin Card Sorting Test in healthy adults.

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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Cognitive Psychology

Background:

  • Executive functioning, a key cognitive ability, is crucial for goal-directed behavior.
  • Dopamine receptors, particularly D(2)/D(3) subtypes, play a significant role in cognitive processes.
  • The anterior cingulate cortex is implicated in executive control and decision-making.

Purpose of the Study:

  • To examine the relationship between extrastriatal dopamine D(2)/D(3) receptor availability and performance on the Wisconsin Card Sorting Test (WCST).
  • To investigate the role of dopamine D(2)/D(3) receptors in the anterior cingulate cortex in executive functioning.

Main Methods:

  • Thirty-two healthy volunteers completed the WCST.
  • Positron emission tomography (PET) with the high-affinity D(2)/D(3) receptor tracer [(11)C]FLB 457 was used to measure receptor binding.
  • Voxel-based receptor parametric mapping analysis was employed.

Main Results:

  • All WCST error parameters, especially nonperseverative errors, showed a positive correlation with [(11)C]FLB 457 binding.
  • This correlation was specifically observed in the cognitive division of the right anterior cingulate cortex.
  • Independent analyses confirmed the association between D(2)/D(3) receptor binding and WCST performance.

Conclusions:

  • Executive functioning in healthy individuals is modulated by dopamine D(2)/D(3) receptors.
  • The anterior cingulate cortex is a key region where these receptors influence cognitive performance.
  • Findings highlight the neurochemical underpinnings of executive control.