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Updated: Oct 29, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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The default mode network in cognition: a topographical perspective.

Jonathan Smallwood1, Boris C Bernhardt2, Robert Leech3

  • 1Department of Psychology, Queens University, Kingston, Ontario, Canada. js378@queensu.ca.

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This summary is machine-generated.

The default mode network (DMN) is a brain network involved in complex thought and memory. Understanding its location helps explain its role in cognition and behavior.

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Related Experiment Videos

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Brain Networks

Background:

  • The default mode network (DMN) comprises distributed brain regions in the parietal, temporal, and frontal cortex.
  • DMN activity decreases during attention-demanding tasks.
  • DMN activity increases during complex cognition, including memory and abstract thought.

Purpose of the Study:

  • To explore how the topographic characteristics of the DMN inform its function.
  • To enhance understanding of the DMN's contribution to cognition and behavior.

Main Methods:

  • Analysis of DMN location within the cortex.
  • Consideration of DMN's spatial relationship to sensory and motor systems.

Main Results:

  • The DMN is situated in cortical regions distant from sensory and motor areas.
  • Topographic knowledge provides insights into DMN's cognitive roles.

Conclusions:

  • The spatial organization of the DMN is key to understanding its involvement in higher-order cognitive functions.
  • Leveraging topographic information can advance our knowledge of the DMN's impact on behavior.