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Dorsolateral prefrontal cortex and Stroop performance: tackling the lateralization.

Marie-Anne Vanderhasselt1, Rudi De Raedt, Chris Baeken

  • 1Ghent University, Ghent, Belgium. marieanne.vanderhasselt@ugent.be

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Summary
This summary is machine-generated.

Cognitive control involves the dorsolateral prefrontal cortex (DLPFC). The left DLPFC manages attentional set adjustments based on expectancies, while the right DLPFC regulates attention during experienced conflict.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • The dorsolateral prefrontal cortex (DLPFC) is crucial for cognitive control.
  • The precise lateralization of DLPFC function during the Stroop task remains unclear.
  • The Stroop task is a foundational paradigm in cognitive control research.

Purpose of the Study:

  • To elucidate the lateralization of dorsolateral prefrontal cortex (DLPFC) function during Stroop task performance.
  • To differentiate the roles of the left and right DLPFC in cognitive control mechanisms.

Main Methods:

  • Review of existing neuroscience literature on Stroop task variants.
  • Analysis of studies investigating DLPFC involvement in cognitive control.

Main Results:

  • The left DLPFC is associated with rapid, sequential up-regulation of the attentional set, driven by trial expectancies.
  • The right DLPFC is linked to a general increase in attentional set regulation when conflict is perceived.
  • Attentional adjustments are primarily driven by anticipation of conflict, not the conflict itself.

Conclusions:

  • DLPFC lateralization in cognitive control is evident during Stroop task performance.
  • Left DLPFC engagement relates to proactive attentional adjustments based on expectancies.
  • Right DLPFC activation reflects reactive attentional regulation in response to experienced conflict.