Persistence in postural dynamics is dependent on constraints of vision, postural orientation, and the temporal structure of support surface translations

Troy J. Rand, Venkata Naga Pradeep Ambati, Mukul Mukherjee

Research output: Contribution to journalArticle

Abstract

Activities of daily living require maintaining upright posture within a variety of environmental constraints. A healthy postural control system can adapt to different environmental constraints. Afferent sensory information is used to determine where the body is in relation to the gravitational vertical and efferent motor commands make corrections with the goal of keeping the center of mass within the base of support. The purpose of this research was to understand how vision, direction of translation, and the temporal correlation of the support surface stimuli affected the persistence characteristics of postural dynamics on short and long time scales. Ten healthy young adults performed a standing task with either eyes open or closed, oriented anteriorly or mediolaterally while the support surface underwent structured translations based on different levels of temporal correlation—white noise (no correlation), pink noise (moderate correlation), and red noise and sinusoidal movements (strong correlations). Center of pressure velocity was analyzed using fractal analysis to determine the dynamics of postural control. On the short time scale, persistence was shown to be stronger with eyes closed, in the mediolateral direction, and when the structure of translation contained stronger temporal correlation. On the long time scale, anti-persistence was stronger with eyes closed, in the mediolateral direction, and for all structures of movement except red noise. This study provides deeper insight into the flexibility existing in human movement responses to structured environmental stimuli through the fractal analysis of movement variability.

Original languageEnglish (US)
Pages (from-to)601-610
Number of pages10
JournalExperimental Brain Research
Volume237
Issue number3
DOIs
StatePublished - Mar 4 2019

Fingerprint

Noise
Fractals
Activities of Daily Living
Posture
Young Adult
Pressure
Research
Direction compound

Keywords

  • Balance
  • Detrended fluctuation analysis
  • Feedback
  • Feedforward
  • Fractal
  • Temporal correlation

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Persistence in postural dynamics is dependent on constraints of vision, postural orientation, and the temporal structure of support surface translations. / Rand, Troy J.; Ambati, Venkata Naga Pradeep; Mukherjee, Mukul.

In: Experimental Brain Research, Vol. 237, No. 3, 04.03.2019, p. 601-610.

Research output: Contribution to journalArticle

@article{ab81ecac5b5849dd91d7392e6b0fd597,
title = "Persistence in postural dynamics is dependent on constraints of vision, postural orientation, and the temporal structure of support surface translations",
abstract = "Activities of daily living require maintaining upright posture within a variety of environmental constraints. A healthy postural control system can adapt to different environmental constraints. Afferent sensory information is used to determine where the body is in relation to the gravitational vertical and efferent motor commands make corrections with the goal of keeping the center of mass within the base of support. The purpose of this research was to understand how vision, direction of translation, and the temporal correlation of the support surface stimuli affected the persistence characteristics of postural dynamics on short and long time scales. Ten healthy young adults performed a standing task with either eyes open or closed, oriented anteriorly or mediolaterally while the support surface underwent structured translations based on different levels of temporal correlation—white noise (no correlation), pink noise (moderate correlation), and red noise and sinusoidal movements (strong correlations). Center of pressure velocity was analyzed using fractal analysis to determine the dynamics of postural control. On the short time scale, persistence was shown to be stronger with eyes closed, in the mediolateral direction, and when the structure of translation contained stronger temporal correlation. On the long time scale, anti-persistence was stronger with eyes closed, in the mediolateral direction, and for all structures of movement except red noise. This study provides deeper insight into the flexibility existing in human movement responses to structured environmental stimuli through the fractal analysis of movement variability.",
keywords = "Balance, Detrended fluctuation analysis, Feedback, Feedforward, Fractal, Temporal correlation",
author = "Rand, {Troy J.} and Ambati, {Venkata Naga Pradeep} and Mukul Mukherjee",
year = "2019",
month = "3",
day = "4",
doi = "10.1007/s00221-018-5444-7",
language = "English (US)",
volume = "237",
pages = "601--610",
journal = "Experimental Brain Research",
issn = "0014-4819",
publisher = "Springer Verlag",
number = "3",

}

TY - JOUR

T1 - Persistence in postural dynamics is dependent on constraints of vision, postural orientation, and the temporal structure of support surface translations

AU - Rand, Troy J.

AU - Ambati, Venkata Naga Pradeep

AU - Mukherjee, Mukul

PY - 2019/3/4

Y1 - 2019/3/4

N2 - Activities of daily living require maintaining upright posture within a variety of environmental constraints. A healthy postural control system can adapt to different environmental constraints. Afferent sensory information is used to determine where the body is in relation to the gravitational vertical and efferent motor commands make corrections with the goal of keeping the center of mass within the base of support. The purpose of this research was to understand how vision, direction of translation, and the temporal correlation of the support surface stimuli affected the persistence characteristics of postural dynamics on short and long time scales. Ten healthy young adults performed a standing task with either eyes open or closed, oriented anteriorly or mediolaterally while the support surface underwent structured translations based on different levels of temporal correlation—white noise (no correlation), pink noise (moderate correlation), and red noise and sinusoidal movements (strong correlations). Center of pressure velocity was analyzed using fractal analysis to determine the dynamics of postural control. On the short time scale, persistence was shown to be stronger with eyes closed, in the mediolateral direction, and when the structure of translation contained stronger temporal correlation. On the long time scale, anti-persistence was stronger with eyes closed, in the mediolateral direction, and for all structures of movement except red noise. This study provides deeper insight into the flexibility existing in human movement responses to structured environmental stimuli through the fractal analysis of movement variability.

AB - Activities of daily living require maintaining upright posture within a variety of environmental constraints. A healthy postural control system can adapt to different environmental constraints. Afferent sensory information is used to determine where the body is in relation to the gravitational vertical and efferent motor commands make corrections with the goal of keeping the center of mass within the base of support. The purpose of this research was to understand how vision, direction of translation, and the temporal correlation of the support surface stimuli affected the persistence characteristics of postural dynamics on short and long time scales. Ten healthy young adults performed a standing task with either eyes open or closed, oriented anteriorly or mediolaterally while the support surface underwent structured translations based on different levels of temporal correlation—white noise (no correlation), pink noise (moderate correlation), and red noise and sinusoidal movements (strong correlations). Center of pressure velocity was analyzed using fractal analysis to determine the dynamics of postural control. On the short time scale, persistence was shown to be stronger with eyes closed, in the mediolateral direction, and when the structure of translation contained stronger temporal correlation. On the long time scale, anti-persistence was stronger with eyes closed, in the mediolateral direction, and for all structures of movement except red noise. This study provides deeper insight into the flexibility existing in human movement responses to structured environmental stimuli through the fractal analysis of movement variability.

KW - Balance

KW - Detrended fluctuation analysis

KW - Feedback

KW - Feedforward

KW - Fractal

KW - Temporal correlation

UR - http://www.scopus.com/inward/record.url?scp=85057843012&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85057843012&partnerID=8YFLogxK

U2 - 10.1007/s00221-018-5444-7

DO - 10.1007/s00221-018-5444-7

M3 - Article

C2 - 30506391

AN - SCOPUS:85057843012

VL - 237

SP - 601

EP - 610

JO - Experimental Brain Research

JF - Experimental Brain Research

SN - 0014-4819

IS - 3

ER -