INDIGO Home University of Illinois at Urbana-Champaign logo uic building uic pavilion uic student center

Generalization of Motor Adaptation to Repeated-Slip Perturbation Across Tasks

Show full item record

Bookmark or cite this item: http://hdl.handle.net/10027/7721

Files in this item

File Description Format
PDF JNSC-10-1598R2-1.pdf (472KB) (no description provided) PDF
Title: Generalization of Motor Adaptation to Repeated-Slip Perturbation Across Tasks
Alternative Title: Inter-task generalization
Author(s): Wang, Ting-Yun; Bhatt, Tanvi; Yang, Feng; Pai, Yi-Chung
Subject(s): perturbation training sit-to-stand gait stability limb support fall
Abstract: Similar adaptations improve both proactive and reactive control of center-of-mass (COM) stability and limb support against gravity during different daily tasks (e.g., sitto-stand and walking) as a consequence of perturbation training for resisting falls. Yet it is unclear whether or to what extent such similarities actually promote inter-task generalization. The purpose of this study was therefore to determine whether young adults could indeed transfer their adaptive control, acquired from sit-to-stand-slip, to improve their likelihood of a recovery from an unannounced novel slip in walking. Subjects underwent either repeated slips during sitto-stand before experiencing an unannounced, novel slip during walking (training group, n=20), or they received no prior training before the same gait-slip (control group, n=23). The subjects demonstrated training-induced generalization of their improved proactive control of stability in post-training (unperturbed) gait pattern that was more stable against backward balance loss than was that of their own pre-training pattern as well the gait pattern of the subjects in the control group. Upon the unannounced novel gait-slip, the training group showed significantly lower incidence of both falls and balance loss than that shown by the control, resulting from the improvements in the reactive control of limb support and slip velocity, which directly influenced the control of their COM stability. Such transfer could occur when the subjects' central nervous system recalibrates the non-task-specific, generalized representation of stability limits during the initial training to guide both their feed-forward adjustments and their feedback responses. The findings of the inter-task generalization suggests that behavioral changes induced via the perturbation training paradigm have the potential to prevent falls across the spectrum of cyclic and non-cyclic activities.
Issue Date: 2011-04-28
Publisher: Elsevier
Citation Info: Wang, T. Y., Bhatt, T., Yang, F., & Pai, Y. C. 2011. Generalization of Motor Adaptation to Repeated-Slip Perturbation Across Tasks. Neuroscience 180: 85-95. DOI: 10.1016/j.neuroscience.2011.02.039
Type: Article
Description: NOTICE: this is the author’s version of a work that was accepted for publication in Neuroscience. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Neuroscience, [Vol 108, (April 2011)] DOI:10.1016/j.neuroscience.2011.02.039. The original publication is available at www.elsevier.com.
URI: http://hdl.handle.net/10027/7721
ISSN: 0306-4522
Sponsor: This work was supported by National Institutes of Health Grant No. R01-AG029616.
Date Available in INDIGO: 2011-05-27
 

This item appears in the following Collection(s)

Show full item record

Statistics

Country Code Views
United States of America 86
China 37
United Kingdom 6
India 4
Netherlands 2

Browse

My Account

Information

Access Key