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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Visually induced postural sway in anxiety disorders.

Mark S Redfern1, Joseph M Furman, Rolf G Jacob

  • 1Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA. mredfern@pitt.edu

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Anxiety patients show increased sway in moving visual environments, especially those with space and motion discomfort (SMD). This visual sensitivity suggests potential benefits from balance disorder treatments focusing on sensory re-integration.

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Area of Science:

  • Neuroscience
  • Psychology
  • Biomechanics

Background:

  • Anxiety disorders are linked to altered sensory processing.
  • Space and motion discomfort (SMD) may exacerbate balance issues in anxiety.

Purpose of the Study:

  • To investigate postural sway in response to visual stimuli in anxiety patients.
  • To determine if SMD influences sway in individuals with anxiety disorders.

Main Methods:

  • Compared postural sway of anxiety patients (generalized anxiety, panic/agoraphobia) and healthy controls.
  • Utilized a force platform with a moving visual surround.
  • Assessed space and motion discomfort (SMD) via questionnaire.

Main Results:

  • Anxiety patients exhibited significantly greater postural sway than controls.
  • No sway differences were found between generalized anxiety and panic/agoraphobia groups.
  • High SMD predicted increased sway in anxiety patients, exceeding controls and low-SMD anxiety patients.

Conclusions:

  • Anxiety patients, particularly those with SMD, demonstrate heightened visual dependence for maintaining balance.
  • This visual sensitivity suggests that vestibular rehabilitation therapies could benefit this patient subgroup.