Stepping in Place While Voluntarily Turning Around Produces a Long-Lasting Posteffect Consisting in Inadvertent Turning While Stepping Eyes Closed
Joint Authors
Sozzi, Stefania
Schieppati, Marco
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-22
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Training subjects to step in place on a rotating platform while maintaining a fixed body orientation in space produces a posteffect consisting in inadvertent turning around while stepping in place eyes closed (podokinetic after-rotation, PKAR).
We tested the hypothesis that voluntary turning around while stepping in place also produces a posteffect similar to PKAR.
Sixteen subjects performed 12 min of voluntary turning while stepping around their vertical axis eyes closed and 12 min of stepping in place eyes open on the center of a platform rotating at 60°/s (pretests).
Then, subjects continued stepping in place eyes closed for at least 10 min (posteffect).
We recorded the positions of markers fixed to head, shoulder, and feet.
The posteffect of voluntary turning shared all features of PKAR.
Time decay of angular velocity, stepping cadence, head acceleration, and ratio of angular velocity after to angular velocity before were similar between both protocols.
Both postrotations took place inadvertently.
The posteffects are possibly dependent on the repeated voluntary contraction of leg and foot intrarotating pelvic muscles that rotate the trunk over the stance foot, a synergy common to both protocols.
We propose that stepping in place and voluntary turning can be a scheme ancillary to the rotating platform for training body segment coordination in patients with impairment of turning synergies of various origin.
American Psychological Association (APA)
Sozzi, Stefania& Schieppati, Marco. 2016. Stepping in Place While Voluntarily Turning Around Produces a Long-Lasting Posteffect Consisting in Inadvertent Turning While Stepping Eyes Closed. Neural Plasticity،Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1113255
Modern Language Association (MLA)
Sozzi, Stefania& Schieppati, Marco. Stepping in Place While Voluntarily Turning Around Produces a Long-Lasting Posteffect Consisting in Inadvertent Turning While Stepping Eyes Closed. Neural Plasticity No. 2016 (2016), pp.1-14.
https://search.emarefa.net/detail/BIM-1113255
American Medical Association (AMA)
Sozzi, Stefania& Schieppati, Marco. Stepping in Place While Voluntarily Turning Around Produces a Long-Lasting Posteffect Consisting in Inadvertent Turning While Stepping Eyes Closed. Neural Plasticity. 2016. Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1113255
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1113255