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Experimental Methods to Study Human Postural Control
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Early aging and postural control while listening and responding.

Karen S Helfer1, Richard van Emmerik2, Jacob J Banks2

  • 1University of Massachusetts Amherst, Department of Communication Disorders, 358 North Pleasant Street, Amherst, Massachusetts 01003, USA.

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This summary is machine-generated.

Middle-aged adults experience greater declines in balance when listening and performing tasks simultaneously, especially with speech noise. This highlights the impact of communication on postural control in challenging environments.

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Area of Science:

  • Auditory neuroscience
  • Motor control
  • Human factors

Background:

  • Communication often occurs during other activities, posing dual-task challenges.
  • Age-related changes in hearing and postural control can affect older adults.
  • Understanding dual-task costs is crucial for safety and performance.

Purpose of the Study:

  • To investigate the impact of listening on postural control in middle-aged versus younger adults.
  • To determine if speech maskers impose greater dual-task costs than noise.
  • To examine the relationship between hearing loss and dual-task postural control costs.

Main Methods:

  • Participants (n=15/group) performed postural control tasks (balancing) under varying listening conditions (quiet, noise, speech).
  • Speech understanding was assessed with and without postural tasks.
  • Postural control performance was measured in isolation and during dual-tasking.

Main Results:

  • Middle-aged adults showed larger dual-task costs for postural control with speech maskers compared to younger adults.
  • Dual-task costs for postural control increased with high-frequency hearing loss, independent of age.
  • Speech maskers, unlike noise, significantly impacted middle-aged adults' postural control.

Conclusions:

  • Postural control in middle-aged adults is compromised during communication in challenging auditory environments.
  • Increased cognitive resources may be needed for speech understanding in dual-task situations for this age group.
  • High-frequency hearing loss is a significant factor in dual-task postural control deficits.