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dc.contributor.author
Georgarakis, Anna-Maria
dc.contributor.author
Sonar, Harshal A.
dc.contributor.author
Rinderknecht, Mike D.
dc.contributor.author
Popp, Werner L.
dc.contributor.author
Duarte, Jaime E.
dc.contributor.author
Lambercy, Olivier
dc.contributor.author
Paik, Jamie
dc.contributor.author
Martin, Bernard J.
dc.contributor.author
Riener, Robert
dc.contributor.author
Klamroth-Marganska, Verena
dc.date.accessioned
2020-04-20T08:41:02Z
dc.date.available
2020-04-11T01:51:10Z
dc.date.available
2020-04-20T08:41:02Z
dc.date.issued
2020-03-03
dc.identifier.issn
1662-5161
dc.identifier.other
10.3389/fnhum.2020.00065
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/409272
dc.identifier.doi
10.3929/ethz-b-000409272
dc.description.abstract
Stochastic stimulation has been shown to improve movement, balance, the sense of touch, and may also improve position sense. This stimulation can be non-invasive and may be a simple technology to enhance proprioception. In this study, we investigated whether sub-threshold stochastic tactile stimulation of mechanoreceptors reduces age-related errors in wrist position estimation. Fifteen young (24.5±1.5y) and 23 elderly (71.7±7.3y) unimpaired, right-handed adults completed a wrist position gauge-matching experiment. In each trial, the participant's concealed wrist was moved to a target position between 10 and 30° of wrist flexion or extension by a robotic manipulandum. The participant then estimated the wrist's position on a virtual gauge. During half of the trials, sub-threshold stochastic tactile stimulation was applied to the wrist muscle tendon areas. Stochastic stimulation did not significantly influence wrist position sense. In the elderly group, estimation errors decreased non-significantly when stimulation was applied compared to the trials without stimulation [mean constant error reduction Δμ(θofcon)=0.8° in flexion and Δμ(θoecon)=0.7° in extension direction, p = 0.95]. This effect was less pronounced in the young group [Δμ(θycon)=0.2° in flexion and in extension direction, p = 0.99]. These improvements did not yield a relevant effect size (Cohen's d < 0.1). Estimation errors increased with target angle magnitude in both movement directions. In young participants, estimation errors were non-symmetric, with estimations in flexion [μ(θyfcon)=1.8°, σ(θyfcon)=7.0°] being significantly more accurate than in extension [μ(θyecon)=8.3°, σ(θyecon)=9.3°, p < 0.01]. This asymmetry was not present in the elderly group, where estimations in flexion [μ(θofcon)=7.5°, σ(θofcon)=9.8°] were similar to extension [μ(θoecon)=7.7°, σ(θoecon)=9.3°]. Hence, young and elderly participants performed equally in extension direction, whereas wrist position sense in flexion direction deteriorated with age (p < 0.01). Though unimpaired elderly adults did not benefit from stochastic stimulation, it cannot be deduced that individuals with more severe impairments of their sensory system do not profit from this treatment. While the errors in estimating wrist position are symmetric in flexion and extension in elderly adults, young adults are more accurate when estimating wrist flexion, an effect that has not been described before.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Frontiers Media
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Age-Dependent Asymmetry of Wrist Position Sense Is Not Influenced by Stochastic Tactile Stimulation
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Frontiers in Human Neuroscience
ethz.journal.volume
14
en_US
ethz.journal.abbreviated
Front. Hum. Neurosci.
ethz.pages.start
65
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Lausanne
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::03654 - Riener, Robert / Riener, Robert
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::03654 - Riener, Robert / Riener, Robert
ethz.date.deposited
2020-04-11T01:51:11Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-04-20T08:41:12Z
ethz.rosetta.lastUpdated
2024-02-02T10:44:51Z
ethz.rosetta.versionExported
true
ethz.COinS
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