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Related Experiment Video

Updated: Jun 8, 2025

Motor Dual-Tasks for Gait Analysis and Evaluation in Post-Stroke Patients
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Distinct Neural Mechanisms Underlying Dual-Task Priority During Gait Across Cognitive and Motor Networks.

Eunkyung Kim1,2, Seo Jung Yun1,3,4, Byung-Mo Oh1,3,5

  • 1Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Republic of Korea.

Brain Connectivity
|November 7, 2024
PubMed
Summary

Individuals prioritizing cognitive tasks during gait showed enhanced brain connectivity, suggesting different neural strategies for dual-tasking. This impacts understanding complex gait performance.

Keywords:
cognitive–motor networkdual-taskgaitresting-state fMRItask prioritization

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Motor Control

Background:

  • Gait performance is influenced by cognitive-motor interactions and prioritization strategies.
  • Successful dual-tasking during gait relies on effective integration of cognitive and motor functions.

Purpose of the Study:

  • To investigate within- and between-network brain connectivity in cognitive and motor networks during dual-task gait.
  • To examine how dual-task priority influences neural mechanisms underlying gait.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to assess brain connectivity in healthy older adults.
  • Independent component analysis identified key cognitive (dorsal attention network, frontoparietal network) and motor networks.
  • Participants were grouped into cognitive or motor priority based on the modified attention allocation index (mAAI).

Main Results:

  • The cognitive priority group demonstrated cognitive dual-task facilitation and lower combined dual-task costs.
  • Increased within-network connectivity in the left frontoparietal network (FPN) was observed in the cognitive priority group.
  • Enhanced between-network connectivity between the right FPN and both the dorsal attention network (DAN) and primary motor network (PM) correlated negatively with mAAI.

Conclusions:

  • Dual-task prioritization during gait involves distinct neural mechanisms across cognitive and motor networks.
  • Individual differences in task prioritization strategies are reflected in specific patterns of brain connectivity.
  • Findings offer insights into neural adaptations for gait in complex, multi-tasking environments.