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Related Experiment Video

Updated: May 31, 2026

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
09:52

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation

Published on: February 23, 2020

Dynamic interactions in the fronto-parietal network during a manual stimulus-response compatibility task.

Edna C Cieslik1, Karl Zilles, Christian Grefkes

  • 1Institute of Neuroscience and Medicine, INM-2, Research Centre Jülich, Jülich, Germany. e.cieslik@fz-juelich.de

Neuroimage
|June 29, 2011
PubMed
Summary

This study reveals how the right temporoparietal junction (TPJ) mediates attentional reorienting by balancing brain activity. The pre-supplementary motor area (preSMA) controls motor responses, while the right dorsolateral prefrontal cortex (DLPFC) may monitor processes.

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Computational Neuroscience

Background:

  • Attentional orienting involves both bottom-up stimulus-driven and top-down task-dependent processes.
  • Understanding the interaction between these processes is crucial for explaining voluntary and involuntary attention shifts.
  • Previous research implicated specific brain regions in distinct aspects of attentional control and motor responses.

Purpose of the Study:

  • To investigate the functional interactions between brain regions involved in attentional orienting and stimulus-response compatibility.
  • To elucidate the specific roles of the intraparietal sulcus (IPS), dorsal premotor cortex (dPMC), right temporoparietal junction (TPJ), right dorsolateral prefrontal cortex (DLPFC), and pre-supplementary motor area (preSMA).
  • To model the dynamic causal interactions within this network using computational methods.

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Last Updated: May 31, 2026

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Main Methods:

  • Dynamic Causal Modelling (DCM) was employed to analyze functional neuroimaging data.
  • Thirty-six different network models were tested to assess connectivity and interactions between key brain regions.
  • The study focused on a manual stimulus-response compatibility task to examine attentional and motor control mechanisms.

Main Results:

  • The right TPJ was identified as a key mediator in attentional reorienting, modulating inter-hemispheric communication between the bilateral IPS.
  • Connection strength analysis supported the role of the preSMA in regulating motor cortex activity, either promoting or suppressing responses.
  • The right DLPFC's role was less clear, suggesting a potential function in generic monitoring rather than inhibitory control.

Conclusions:

  • The findings provide evidence for context-dependent top-down control exerted by the right TPJ, DLPFC, and preSMA in stimulus-response compatibility tasks.
  • The study highlights the dynamic interplay between dorsal and frontal brain networks in guiding attention and action.
  • This research contributes to a more nuanced understanding of neural mechanisms underlying voluntary attentional control and response selection.