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The frontoparietal multiple demand network interacts with the dual pathways in auditory working memory.

Ada W S Leung1,2, Sylvain Moreno3, Claude Alain4,5

  • 1Department of Occupational Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, T6G 2G4, Canada.

Cerebral Cortex (New York, N.Y. : 1991)
|February 22, 2023
PubMed
Summary

The frontoparietal multiple demand (MD) network aids auditory working memory (AWM). This network interacts with dual pathways, crucial for performance, especially under high cognitive load.

Keywords:
auditory working memorybrain–behavioral relationshipdual pathwaysfrontoparietal multiple demand networkfunctional connectivity

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Area of Science:

  • Cognitive Neuroscience
  • Auditory Neuroscience
  • Neuroimaging

Background:

  • The frontoparietal multiple demand (MD) network is theorized as a control system for goal-directed actions.
  • Its role in auditory working memory (AWM) and interaction with existing models requires further investigation.

Purpose of the Study:

  • To examine the MD network's function within AWM.
  • To elucidate the relationship between the MD network and the dual pathways model in AWM.
  • To determine how these networks are affected by sound domain and cognitive load.

Main Methods:

  • Functional connectivity and correlation analyses were employed.
  • A within-subjects design using an n-back task was utilized.
  • Participants were healthy young adults (n=41) performing tasks varying in sound domain (spatial/nonspatial) and cognitive load (low/high).

Main Results:

  • The MD network's contribution to AWM was confirmed.
  • Significant interactions were found between the MD network and dual pathways across sound domains and load levels.
  • Connectivity strength with the MD network positively correlated with task accuracy, particularly at high cognitive loads.

Conclusions:

  • Both the MD network and dual pathways are essential for supporting AWM.
  • These networks collaborate, and neither alone fully explains auditory cognition.
  • The MD network plays a critical role in maintaining performance as cognitive demands increase.