Visual influence on postural control, with and without visual motion feedback.
Hafström, Anna LU ; Fransson, Per-Anders LU
; Karlberg, Mikael
LU
; Ledin, Torbjörn
and Magnusson, Måns
LU
(2002)
In Acta Oto-Laryngologica
122(4).
p.392-397
- Abstract
- Body sway was investigated in 20 healthy subjects to determine whether visual input must contain motion feedback information from the surroundings in order to influence postural control. Posturography was used to record body sway under the following visual conditions: eyes open with or without a restricted visual field; eyes open in ganzfield white light; eyes open in darkness with a head-fixed visual target; eyes open in darkness; and eyes closed in darkness. Stance was perturbed by means of a pseudorandomly applied vibratory stimulation to the calf muscles. Least sway was found with eyes open in an unrestricted visual field but increased in a restricted visual field. Greatest sway was found without visual motion feedback, i.e. under the... (More)
- Body sway was investigated in 20 healthy subjects to determine whether visual input must contain motion feedback information from the surroundings in order to influence postural control. Posturography was used to record body sway under the following visual conditions: eyes open with or without a restricted visual field; eyes open in ganzfield white light; eyes open in darkness with a head-fixed visual target; eyes open in darkness; and eyes closed in darkness. Stance was perturbed by means of a pseudorandomly applied vibratory stimulation to the calf muscles. Least sway was found with eyes open in an unrestricted visual field but increased in a restricted visual field. Greatest sway was found without visual motion feedback, i.e. under the following conditions: eyes closed; eyes open in darkness; eyes open in ganzfield white light; and with a head-mounted fixation point. Sway was significantly (p < 0.05) greater with eyes open in darkness compared with eyes closed during the initial 50 s with perturbations. After 150 s, sway was almost identical under the four test conditions without visual motion feedback. Standing with eyes open in darkness was initially a disadvantage compared with having the eyes closed. The postural control system may be programmed to expect visual feedback information when the eyes are open, which may delay changes in postural strategy. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/109507
- author
- Hafström, Anna
LU
; Fransson, Per-Anders
LU
; Karlberg, Mikael
LU
; Ledin, Torbjörn
and Magnusson, Måns
LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Acta Oto-Laryngologica
- volume
- 122
- issue
- 4
- pages
- 392 - 397
- publisher
- Taylor & Francis
- external identifiers
-
- wos:000176301800007
- pmid:12125995
- scopus:0035990189
- ISSN
- 1651-2251
- DOI
- 10.1080/00016480260000076
- language
- English
- LU publication?
- yes
- id
- f7fb3d49-a3d6-4033-99b7-8c261aaf4db7 (old id 109507)
- alternative location
- http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=12125995&dopt=Abstract
- date added to LUP
- 2016-04-01 17:09:02
- date last changed
- 2024-01-26 20:13:20
@article{f7fb3d49-a3d6-4033-99b7-8c261aaf4db7,
abstract = {{Body sway was investigated in 20 healthy subjects to determine whether visual input must contain motion feedback information from the surroundings in order to influence postural control. Posturography was used to record body sway under the following visual conditions: eyes open with or without a restricted visual field; eyes open in ganzfield white light; eyes open in darkness with a head-fixed visual target; eyes open in darkness; and eyes closed in darkness. Stance was perturbed by means of a pseudorandomly applied vibratory stimulation to the calf muscles. Least sway was found with eyes open in an unrestricted visual field but increased in a restricted visual field. Greatest sway was found without visual motion feedback, i.e. under the following conditions: eyes closed; eyes open in darkness; eyes open in ganzfield white light; and with a head-mounted fixation point. Sway was significantly (p < 0.05) greater with eyes open in darkness compared with eyes closed during the initial 50 s with perturbations. After 150 s, sway was almost identical under the four test conditions without visual motion feedback. Standing with eyes open in darkness was initially a disadvantage compared with having the eyes closed. The postural control system may be programmed to expect visual feedback information when the eyes are open, which may delay changes in postural strategy.}},
author = {{Hafström, Anna and Fransson, Per-Anders and Karlberg, Mikael and Ledin, Torbjörn and Magnusson, Måns}},
issn = {{1651-2251}},
language = {{eng}},
number = {{4}},
pages = {{392--397}},
publisher = {{Taylor & Francis}},
series = {{Acta Oto-Laryngologica}},
title = {{Visual influence on postural control, with and without visual motion feedback.}},
url = {{http://dx.doi.org/10.1080/00016480260000076}},
doi = {{10.1080/00016480260000076}},
volume = {{122}},
year = {{2002}},
}