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Related Experiment Video

Updated: Feb 21, 2026

A Vibrotactile Feedback Device for Seated Balance Assessment and Training
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Virtual Balancing for Studying and Training Postural Control.

Daniela Buettner1, Daniela Dalin1, Isabella K Wiesmeier1

  • 1Department of Neurology and Neurophysiology, University Hospital Freiburg, Medical Faculty, Freiburg, Germany.

Frontiers in Neuroscience
|October 12, 2017
PubMed
Summary

This study introduces a virtual balancing apparatus to simulate real-world postural control challenges. Virtual balancing shows promise for balance training, mimicking free stance responses and offering a platform for further patient studies.

Keywords:
balancinginverted pendulummodelpostural controlvirtual

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Area of Science:

  • Biomechanics
  • Human Motor Control
  • Rehabilitation Engineering

Background:

  • Postural control is often modeled as balancing an inverted pendulum, even with external weights.
  • Existing methods for studying postural control have limitations in simulating diverse physical constraints.

Purpose of the Study:

  • To introduce and validate a virtual balancing apparatus for studying postural control.
  • To investigate the effects of modified gravity, damping, and inertia on postural responses.
  • To assess the potential of virtual balancing for balance training in individuals with impaired weight-bearing capacity.

Main Methods:

  • Developed a virtual balancing apparatus applying ankle torque based on ankle angle.
  • Compared postural control during free stance and virtual balancing in 15 healthy subjects.
  • Utilized pseudorandom support surface tilts for free stance and foot plate position variations for virtual balancing.

Main Results:

  • Virtual balancing behavior closely resembled free stance on a tilting platform, particularly in body excursion profiles across frequencies.
  • Non-linearity between stimulus and response amplitude was similar in both conditions.
  • Altered phase behavior and increased body excursions in virtual balancing were partly attributed to limited sensory feedback.
  • Modifying gravity and damping significantly impacted postural behavior, while inertia had a minor effect.

Conclusions:

  • Virtual balancing effectively simulates challenging postural conditions, potentially replicating scenarios from space experiments or parabolic flights.
  • The apparatus shows potential for balance training, though further research is needed to confirm benefits for patient populations.