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Updated: Jun 2, 2026

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Cortical Activity During Postural Recovery Under Dual-task Conditions: A Quantitative EEG Study.

Ehsan Sinaei1,2, Mohammad Nami3, Zahra Saadat4,5

  • 1Department of Rehabilitation Sciences, MGH Institute of Health Professions, Boston, United States.

Basic and Clinical Neuroscience
|June 1, 2026
PubMed
Summary

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This summary is machine-generated.

Older adults show increased brain activity in sensorimotor areas during dual-task balance challenges. This suggests compensatory neural strategies are used to maintain postural control, unlike younger adults.

Area of Science:

  • Neuroscience
  • Gerontology
  • Biomechanics

Background:

  • Postural control declines with age, increasing fall risk.
  • Dual-tasking (DT) exacerbates postural instability in older adults.
  • Cortical involvement in postural adjustments is not fully understood across age groups.

Purpose of the Study:

  • Investigate age-related differences in cortical activity during postural adjustments.
  • Compare brain responses under single-task (ST) and dual-task (DT) conditions.
  • Identify neural mechanisms underlying age-related changes in balance control.

Main Methods:

  • Recruited young (24.25±3.15 yrs) and older (65.55±4.67 yrs) adults.
  • Used unpredictable 3% body weight load release to perturb posture.
Keywords:
Dual-taskingElectroencephalography (EEG)Older adultsPostural recovery

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  • Recorded quantitative electroencephalography (qEEG) from 32 channels during ST and DT (backward counting) conditions.

    • Main Results:

    • Older adults showed higher alpha power in sensorimotor areas (C4, Pz) during DT.
    • Age group x condition interactions revealed greater beta power in frontal/central regions (F4, C4) in older adults under DT.
    • Older adults exhibited significantly greater beta power during DT compared to younger individuals.

    Conclusions:

    • Older adults utilize enhanced cortical resources for postural recovery, especially under cognitive load.
    • Increased alpha and beta power indicate compensatory cortical strategies due to age-related declines in automatic control.
    • Findings inform fall prevention strategies targeting cognitive and motor functions in aging populations.