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Related Experiment Video

Updated: Apr 20, 2026

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Effective connectivity within the frontoparietal control network differentiates cognitive control and working memory.

Ian H Harding1, Murat Yücel2, Ben J Harrison3

  • 1Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne & Melbourne Health, Melbourne, Australia; Monash Clinical and Imaging Neuroscience, School of Psychological Sciences, Monash University, Melbourne, Australia.

Neuroimage
|December 3, 2014
PubMed
Summary

Cognitive control and working memory share a fronto-parietal network. Dynamic causal modeling reveals unique connectivity changes for each task, highlighting flexible network adaptation for diverse cognitive demands.

Keywords:
Cognitive controlDynamic causal modelingEffective connectivityFrontoparietalWorking memory

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Cognitive Psychology

Background:

  • Cognitive control and working memory depend on a shared fronto-parietal network.
  • This network flexibly adapts to changing behavioral goals and cognitive demands.

Purpose of the Study:

  • To investigate task-related alterations in network interactions within the fronto-parietal network.
  • To differentiate the connectivity dynamics underlying cognitive control and working memory.

Main Methods:

  • Applied dynamic causal modeling (DCM) to functional magnetic resonance imaging (fMRI) data.
  • Used a factorial design combining a multi-source interference task (cognitive control) and a verbal 2-back task (working memory).

Main Results:

  • Both tasks modulated inferior frontal junction (IFJ) sensitivity to perceptual input and IFJ-to-pre-supplementary motor area/dorsal anterior cingulate cortex (pSMA/dACC) connectivity.
  • Cognitive control uniquely increased pSMA/dACC-to-intraparietal sulcus (IPS) and dorsolateral prefrontal cortex (dlPFC)-to-IFJ connectivity.
  • Working memory uniquely induced a negative dlPFC influence on pSMA/dACC connectivity.

Conclusions:

  • The fronto-parietal network exhibits both shared and unique context-dependent dynamics.
  • Shared mechanisms may support general cognitive engagement, while unique dynamics reflect domain-specific adaptations for cognitive control and working memory.