Influences of visual feedback indicator scales on human upright postural control

Lianqing Liu, Hiroyasu Iwata, Lili Pei, Hongyi li, Yunfa fu, Yanhua Yang, Jiangtao li

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Human upright postural control is highly related to visual information. In order to explore the influence of visual feedback on static upright postural control, postural sway of eight healthy young adults was investigated under visual feedback circumstances. In the investigation, postural feedback information was visualized by an indicator composed of a movable spot and a stationary circle, and in addition to Shannon entropy analysis, time domain and frequency domain analyses were employed to inspect postural control adjustment. The experiment results indicate that even though indicator scale changes do not induce significant postural differences in time domain and random characteristics, reduction of the visual feedback indicator scale inspires a postural power shift to higher frequencies. In addition, this reduction also induces a fall-after-rise pattern of postural energy distribution in the frequency range of 0.5–1 Hz.

Original languageEnglish
Pages (from-to)883-892
Number of pages10
JournalTransactions of the Institute of Measurement and Control
Volume35
Issue number7
DOIs
Publication statusPublished - 2013 Oct

Keywords

  • Postural control
  • energy distribution
  • indicator scale
  • power spectrum
  • visual feedback

ASJC Scopus subject areas

  • Instrumentation

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