Metastable postural coordination dynamics

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The present study examined the coordination dynamics of the head and center of mass (COM) using accelerometry in quiet 1 and 2 leg stance with and without vision. The root mean square jerk of effectors was greater in 1 leg stance and without vision, and was greater for the head in 2 leg stance and greater at the COM for 1 leg stance. The coordination of the COM and head was more variable in 1 leg stance with vision than in the other stance and vision combinations. Both grouped and individual participant data showed metastable coordination dynamics with the presence of ghost attractors on both axes of motion that varied with the task. The findings indicated that stance and visual information conditions acted as control parameters, with increments in task difficulty increasing relative phase variability until a bifurcation in the metastable dynamics occurred in 1 leg stance without vision.

Original languageEnglish (US)
Pages (from-to)176-180
Number of pages5
JournalNeuroscience Letters
Volume548
DOIs
StatePublished - Aug 26 2013

Fingerprint

Leg
Head
Accelerometry

Keywords

  • Coordination
  • Dynamics
  • Metastability
  • Posture
  • Stability

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Metastable postural coordination dynamics. / James, Eric G.

In: Neuroscience Letters, Vol. 548, 26.08.2013, p. 176-180.

Research output: Contribution to journalArticle

@article{6515725278764cd487a9a70f1b3e7e8f,
title = "Metastable postural coordination dynamics",
abstract = "The present study examined the coordination dynamics of the head and center of mass (COM) using accelerometry in quiet 1 and 2 leg stance with and without vision. The root mean square jerk of effectors was greater in 1 leg stance and without vision, and was greater for the head in 2 leg stance and greater at the COM for 1 leg stance. The coordination of the COM and head was more variable in 1 leg stance with vision than in the other stance and vision combinations. Both grouped and individual participant data showed metastable coordination dynamics with the presence of ghost attractors on both axes of motion that varied with the task. The findings indicated that stance and visual information conditions acted as control parameters, with increments in task difficulty increasing relative phase variability until a bifurcation in the metastable dynamics occurred in 1 leg stance without vision.",
keywords = "Coordination, Dynamics, Metastability, Posture, Stability",
author = "James, {Eric G.}",
year = "2013",
month = "8",
day = "26",
doi = "10.1016/j.neulet.2013.05.068",
language = "English (US)",
volume = "548",
pages = "176--180",
journal = "Neuroscience Letters",
issn = "0304-3940",
publisher = "Elsevier Ireland Ltd",

}

TY - JOUR

T1 - Metastable postural coordination dynamics

AU - James, Eric G.

PY - 2013/8/26

Y1 - 2013/8/26

N2 - The present study examined the coordination dynamics of the head and center of mass (COM) using accelerometry in quiet 1 and 2 leg stance with and without vision. The root mean square jerk of effectors was greater in 1 leg stance and without vision, and was greater for the head in 2 leg stance and greater at the COM for 1 leg stance. The coordination of the COM and head was more variable in 1 leg stance with vision than in the other stance and vision combinations. Both grouped and individual participant data showed metastable coordination dynamics with the presence of ghost attractors on both axes of motion that varied with the task. The findings indicated that stance and visual information conditions acted as control parameters, with increments in task difficulty increasing relative phase variability until a bifurcation in the metastable dynamics occurred in 1 leg stance without vision.

AB - The present study examined the coordination dynamics of the head and center of mass (COM) using accelerometry in quiet 1 and 2 leg stance with and without vision. The root mean square jerk of effectors was greater in 1 leg stance and without vision, and was greater for the head in 2 leg stance and greater at the COM for 1 leg stance. The coordination of the COM and head was more variable in 1 leg stance with vision than in the other stance and vision combinations. Both grouped and individual participant data showed metastable coordination dynamics with the presence of ghost attractors on both axes of motion that varied with the task. The findings indicated that stance and visual information conditions acted as control parameters, with increments in task difficulty increasing relative phase variability until a bifurcation in the metastable dynamics occurred in 1 leg stance without vision.

KW - Coordination

KW - Dynamics

KW - Metastability

KW - Posture

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=84880133896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880133896&partnerID=8YFLogxK

U2 - 10.1016/j.neulet.2013.05.068

DO - 10.1016/j.neulet.2013.05.068

M3 - Article

C2 - 23769730

AN - SCOPUS:84880133896

VL - 548

SP - 176

EP - 180

JO - Neuroscience Letters

JF - Neuroscience Letters

SN - 0304-3940

ER -