Influences of visual feedback indicator scales on human upright postural control

Author

Pei, Lili ; Li, Hongyi ; Fu, Yunfa ; Yang, Yanhua

Author_Institution

State Key Lab. of Robot., Chinese Acad. of Sci., Shenyang, China

fYear

2011

fDate

20-23 March 2011

Firstpage

249

Lastpage

253

Abstract

Human upright postural control is highly related to visual information. In order to investigate the influence of visual feedback on static upright postural control, postural sway of eight healthy 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 postural control of subjects was inspected both in time domain and frequency domain. The experiment results indicate that reduction of the visual feedback indicator scale inspires a postural power shift to the higher frequencies, and this reduction also induces a fall-after-rise pattern of postural energy distribution in the frequency range of 0.5~1 Hz.

Keywords

biomechanics; medical control systems; human upright postural control; postural energy distribution; postural feedback information; postural power shift; static upright postural control; visual feedback indicator scales; visual information; Force; Frequency control; Frequency domain analysis; Humans; Power distribution; Time domain analysis; Visualization; energy distribution; indicator scale; postural control; power spectrum; visual feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), 2011 IEEE International Conference on

Conference_Location

Kunming

Print_ISBN

978-1-61284-910-2

Type

conf

DOI

10.1109/CYBER.2011.6011803

Filename

6011803