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 language | English (US) |
|---|---|
| Pages (from-to) | 176-180 |
| Number of pages | 5 |
| Journal | Neuroscience Letters |
| Volume | 548 |
| DOIs | |
| State | Published - Aug 26 2013 |
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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 journal › Article
}
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
VL - 548
SP - 176
EP - 180
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
ER -