Potential mechanisms of sensory augmentation systems on human balance control

Kathleen H. Sienko, Rachael D. Seidler, Wendy J. Carender, Adam D. Goodworth, Susan L. Whitney, Robert (Bob) Peterka

Research output: Contribution to journalArticle

Abstract

Numerous studies have demonstrated the real-time use of visual, vibrotactile, auditory, and multimodal sensory augmentation technologies for reducing postural sway during static tasks and improving balance during dynamic tasks. The mechanism by which sensory augmentation information is processed and used by the CNS is not well understood. The dominant hypothesis, which has not been supported by rigorous experimental evidence, posits that observed reductions in postural sway are due to sensory reweighting: feedback of body motion provides the CNS with a correlate to the inputs from its intact sensory channels (e.g., vision, proprioception), so individuals receiving sensory augmentation learn to increasingly depend on these intact systems. Other possible mechanisms for observed postural sway reductions include: cognition (processing of sensory augmentation information is solely cognitive with no selective adjustment of sensory weights by the CNS), “sixth” sense (CNS interprets sensory augmentation information as a new and distinct sensory channel), context-specific adaptation (new sensorimotor program is developed through repeated interaction with the device and accessible only when the device is used), and combined volitional and non-volitional responses. This critical review summarizes the reported sensory augmentation findings spanning postural control models, clinical rehabilitation, laboratory-based real-time usage, and neuroimaging to critically evaluate each of the aforementioned mechanistic theories. Cognition and sensory re-weighting are identified as two mechanisms supported by the existing literature.

Original languageEnglish (US)
Article number201800944
JournalFrontiers in Neurology
Volume9
Issue numberNOV
DOIs
StatePublished - Nov 12 2018

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Cognition
Social Adjustment
Proprioception
Equipment and Supplies
Sensory Feedback
Neuroimaging
Rehabilitation
Technology
Weights and Measures

Keywords

  • Balance
  • Balance prosthesis
  • Biofeedback
  • Sensory augmentation
  • Sensory reweighting
  • Sensory substitution

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

Cite this

Sienko, K. H., Seidler, R. D., Carender, W. J., Goodworth, A. D., Whitney, S. L., & Peterka, R. B. (2018). Potential mechanisms of sensory augmentation systems on human balance control. Frontiers in Neurology, 9(NOV), [201800944]. https://doi.org/10.3389/fneur.2018.00944

Potential mechanisms of sensory augmentation systems on human balance control. / Sienko, Kathleen H.; Seidler, Rachael D.; Carender, Wendy J.; Goodworth, Adam D.; Whitney, Susan L.; Peterka, Robert (Bob).

In: Frontiers in Neurology, Vol. 9, No. NOV, 201800944, 12.11.2018.

Research output: Contribution to journalArticle

Sienko, KH, Seidler, RD, Carender, WJ, Goodworth, AD, Whitney, SL & Peterka, RB 2018, 'Potential mechanisms of sensory augmentation systems on human balance control', Frontiers in Neurology, vol. 9, no. NOV, 201800944. https://doi.org/10.3389/fneur.2018.00944
Sienko, Kathleen H. ; Seidler, Rachael D. ; Carender, Wendy J. ; Goodworth, Adam D. ; Whitney, Susan L. ; Peterka, Robert (Bob). / Potential mechanisms of sensory augmentation systems on human balance control. In: Frontiers in Neurology. 2018 ; Vol. 9, No. NOV.
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