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Voluntarily controlled but not merely observed visual feedback affects postural sway
- Source :
- PeerJ, Vol 6, p e4643 (2018), PeerJ
- Publication Year :
- 2018
- Publisher :
- PeerJ, 2018.
-
Abstract
- Online stabilization of human standing posture utilizes multisensory afferences (e.g., vision). Whereas visual feedback of spontaneous postural sway can stabilize postural control especially when observers concentrate on their body and intend to minimize postural sway, the effect of intentional control of visual feedback on postural sway itself remains unclear. This study assessed quiet standing posture in healthy adults voluntarily controlling or merely observing visual feedback. The visual feedback (moving square) had either low or high gain and was either horizontally flipped or not. Participants in the voluntary-control group were instructed to minimize their postural sway while voluntarily controlling visual feedback, whereas those in the observation group were instructed to minimize their postural sway while merely observing visual feedback. As a result, magnified and flipped visual feedback increased postural sway only in the voluntary-control group. Furthermore, regardless of the instructions and feedback manipulations, the experienced sense of control over visual feedback positively correlated with the magnitude of postural sway. We suggest that voluntarily controlled, but not merely observed, visual feedback is incorporated into the feedback control system for posture and begins to affect postural sway.
- Subjects :
- High-gain antenna
medicine.medical_specialty
genetic structures
medicine.medical_treatment
Feedback control
lcsh:Medicine
Psychiatry and Psychology
Biofeedback
Sense of control
Intention
Stabilometry
Visual feedback
050105 experimental psychology
General Biochemistry, Genetics and Molecular Biology
Postural control
03 medical and health sciences
0302 clinical medicine
Physical medicine and rehabilitation
Visuomotor
medicine
0501 psychology and cognitive sciences
Observation group
musculoskeletal, neural, and ocular physiology
General Neuroscience
lcsh:R
05 social sciences
General Medicine
Kinesiology
eye diseases
General Agricultural and Biological Sciences
Psychology
human activities
psychological phenomena and processes
030217 neurology & neurosurgery
Neuroscience
Quiet standing
Subjects
Details
- ISSN :
- 21678359
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- PeerJ
- Accession number :
- edsair.doi.dedup.....024b0d51bf684de78fde0df616da140a