Effects of linear versus sigmoid coding of visual or audio biofeedback for the control of upright stance.
Artikel i vetenskaplig tidskrift, 2006

Although both visual and audio biofeedback (BF) systems for postural control can reduce sway during stance, a direct comparison between the two systems has never been done. Further, comparing different coding designs of audio and visual BF may help in elucidating how BF information is integrated in the control of posture, and may improve knowledge for the design of innovative BF systems for postural control. The purpose of this paper is to compare the effects of linear versus sigmoid coding of trunk acceleration for audio and visual BF on postural sway in a group of eight, healthy subjects while standing on a foam surface. Results showed that sigmoid-coded audio BF reduced sway acceleration more than did a linear-coded audio BF, whereas a linear-coded visual BF reduced sway acceleration more than a sigmoid-coded visual BF. In addition, audio BF had larger effects on reducing center of pressure (COP) displacement whereas visual BF had larger effects on reducing trunk sway. These results suggest that audio and visual BF for postural control benefit from different types of sensory coding and each type of BF may encourage a different type of postural sway strategy.

Models

Auditory Perception

Posture

Skeletal

Psychology

Linear Models

Visual Perception

Humans

physiology

physiology

Female

Male

physiology

physiology

Muscle

Computer Simulation

Nonlinear Dynamics

physiology

Biological

Postural Balance

innervation

Biofeedback

physiology

Författare

Marco Dozza

SAFER - Fordons- och Trafiksäkerhetscentrum

Chalmers, Tillämpad mekanik, Fordonssäkerhet

Lorenzo Chiari

Frantisek Hlavacka

Angelo Cappello

Fay B Horak

IEEE Transactions on Neural Systems and Rehabilitation Engineering

1534-4320 (ISSN)

Vol. 14 4 505-12

Ämneskategorier

Medicinteknik

Annan medicin och hälsovetenskap

Annan naturvetenskap

DOI

10.1109/TNSRE.2006.886732

PubMed

17190042

Mer information

Skapat

2017-10-08