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  1. Home
  3. Reliability Of Behavioral And Fnirs Neural Responses: Assessments During Posture-inhibitory Control Dual Tasking.
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  3. Reliability Of Behavioral And Fnirs Neural Responses: Assessments During Posture-inhibitory Control Dual Tasking.

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Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
07:52

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Published on: October 5, 2020

Reliability of Behavioral and fNIRS Neural Responses: Assessments During Posture-Inhibitory Control Dual Tasking.

Wan-Chun Su1,2, Tony George1, Marc H Bornstein1

  • 1Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health, Bethesda, MD 20892, USA.

Neurosci
|May 27, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Reliability of brain activity measures using functional near-infrared spectroscopy (fNIRS) during posture transitions is variable. Findings support the Capacity Sharing Theory for dual-tasking, indicating shared resources between postural and cognitive demands.

Keywords:
capacity sharing theorydual taskfunctional near-infrared spectroscopyinhibitory controlposturereliability

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Rehabilitation Science

Background:

  • Posture-inhibitory control dual-tasking is essential for daily activities.
  • Functional near-infrared spectroscopy (fNIRS) is used to study dual-tasking neural mechanisms.
  • Reliability of fNIRS during posture transitions is not well understood.

Purpose of the Study:

  • To examine the reliability of behavioral and neural measures during sit-to-stand transitions.
  • To explore neural mechanisms of posture-inhibitory control dual-tasking.

Main Methods:

  • Eighteen healthy adults performed tasks with varying postural and inhibitory demands.
  • Cortical activation was measured using fNIRS before and after a sit-to-stand task.
  • Behavioral reliability was assessed using intraclass correlation (ICC) and Pearson correlation (|r|).

Main Results:

  • Cortical activation patterns varied with task demands, shifting from increased to decreased activation.
  • Behavioral reliability ranged from poor to excellent (ICC: 0.24-0.95; |r|: 0.33-0.97).
  • fNIRS measures showed poor-to-good reliability post-transition (ICC: <0-0.72; |r|: 0.02-0.79).

Conclusions:

  • Findings support the Capacity Sharing Theory, indicating competition for shared resources between postural and cognitive tasks.
  • Behavioral and neural measures exhibit variable reliability across posture transitions.
  • Future research should consider postural changes when interpreting dual-tasking data.