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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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Related Experiment Video

Updated: Aug 5, 2025

Modeling the Functional Network for Spatial Navigation in the Human Brain
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Functional network reconfiguration supporting memory-guided attention.

Kylie Isenburg1,2, Thomas M Morin1,2, Maya L Rosen3

  • 1Graduate Program for Neuroscience, Boston University, 677 Beacon Street, Boston MA 02215, USA.

Cerebral Cortex (New York, N.Y. : 1991)
|March 28, 2023
PubMed
Summary
This summary is machine-generated.

Long-term memory guides attention through brain network communication. The posterior precuneus and retrosplenial cortex are key, integrating internal memories with external information for focused attention.

Keywords:
attentionconnectivityfMRImemoryprecuneus

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Systems Neuroscience

Background:

  • Attentional deployment is influenced by long-term memories (LTM).
  • Understanding brain network communication underlying LTM-guided attention is crucial.

Purpose of the Study:

  • To characterize large-scale brain communication for LTM-guided attention.
  • To investigate the differential contributions of default mode, cognitive control, and dorsal attention subnetworks.

Main Methods:

  • Task-based functional connectivity analysis at network and node-specific levels.
  • Examined interactions between subnetworks during LTM-guided attention tasks.

Main Results:

  • Identified network and node-specific interactions facilitating LTM-guided attention.
  • Posterior precuneus and retrosplenial cortex play critical roles, independent of subnetwork divisions.
  • Dorsal precuneus connects to cognitive control and dorsal attention; ventral precuneus connects across subnetworks.
  • Retrosplenial cortex shows increased connectivity across subnetworks.

Conclusions:

  • Brain connectivity, particularly from dorsal posterior midline regions, integrates internal memory with external information.
  • This integration is critical for effective LTM-guided attention.
  • Specific nodes within posterior precuneus and retrosplenial cortex are vital for LTM-guided attention.