caa a22 4500 445353635 CHVBK 20180317142852.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00221-011-2738-4 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2738-4 Postural control in response to a perturbation: role of vision and additional support [Elektronische Daten] [Krishnan Vennila, Alexander Aruin] The purpose of the study was to investigate the availability of vision and additional support on anticipatory (APA) and compensatory (CPA) postural adjustments and their interaction. Eight healthy adults were exposed to external perturbations induced at the shoulder level while standing with and without holding onto a walker in full vision and while blindfolded. Electrical activity of the trunk and leg muscles and center of pressure (COPAP) displacement were recorded and quantified within the time intervals typical of APA and CPA. The results showed that with full vision, there was no difference in both APA and CPA in standing with and without holding onto a walker. With subjects holding onto a walker, CPA in standing blindfolded were comparable to CPA in full vision; this was seen in changes in the electrical activity of most of the muscles at the individual muscle, joint, and the muscle group levels as well as in COPAP displacement. The findings suggest that (1) in conditions where vision is available, vision overrules simultaneously available proprioceptive information from the support, (2) while in conditions where vision is not available, proprioceptive information from the support or support itself could be substituted for vision. It is possible to suggest that using a non-stabilizing support could be a valuable strategy to improve postural control when visual information is not available or compromised. Springer-Verlag, 2011 Posture nationallicence Anticipatory nationallicence Compensatory nationallicence Vision nationallicence Additional support nationallicence Vennila Krishnan Department of Physical Therapy (MC 898), University of Illinois at Chicago, 1919 W. Taylor St., 60612, Chicago, IL, USA aut Aruin Alexander Department of Physical Therapy (MC 898), University of Illinois at Chicago, 1919 W. Taylor St., 60612, Chicago, IL, USA aut Experimental Brain Research Springer-Verlag 212/3(2011-07-01), 385-397 0014-4819 212:3<385 2011 212 221 https://doi.org/10.1007/s00221-011-2738-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2738-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vennila Krishnan Department of Physical Therapy (MC 898), University of Illinois at Chicago, 1919 W. Taylor St., 60612, Chicago, IL, USA aut NATIONALLICENCE 700 1- Aruin Alexander Department of Physical Therapy (MC 898), University of Illinois at Chicago, 1919 W. Taylor St., 60612, Chicago, IL, USA aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/3(2011-07-01), 385-397 0014-4819 212:3<385 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer