Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks.
<h4>Background</h4>According to between-arms assessments, more than 50% of individuals with stroke have an impaired position sense. Our previous work, which employed a clinical assessment and slightly differing tasks, indicates that individuals who have a deficit on a between-forearms po...
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Public Library of Science (PLoS)
2018-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0206518&type=printable |
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| author | Netta Gurari Justin M Drogos Julius P A Dewald |
| author_facet | Netta Gurari Justin M Drogos Julius P A Dewald |
| author_sort | Netta Gurari |
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| description | <h4>Background</h4>According to between-arms assessments, more than 50% of individuals with stroke have an impaired position sense. Our previous work, which employed a clinical assessment and slightly differing tasks, indicates that individuals who have a deficit on a between-forearms position-localization task do not necessarily have a deficit on a single-forearm position-localization task.<h4>Objective</h4>Our goal here was to, using robotics tools, determine whether individuals with stroke who have a deficit when matching forearm positions within an arm also have a deficit when mirroring forearm positions between arms, independent of the arm that leads the task.<h4>Methods</h4>Eighteen participants with chronic hemiparetic stroke and nine controls completed a single-arm position-matching experiment and between-arms position-mirroring experiment. For each experiment, the reference forearm (left/right) passively rotated about the elbow joint to a reference target location (flexion/extension), and then the participant actively rotated their same/opposite forearm to match/mirror the reference forearm's position. Participants with stroke were classified as having a position-matching/-mirroring deficit based on a quantitative threshold that was derived from the controls' data.<h4>Results</h4>On our single-arm task, one participant with stroke was classified as having a position-matching deficit with a mean magnitude of error greater than 10.7° when referencing their paretic arm. Position-matching ability did not significantly differ for the controls and the remaining seventeen participants with stroke. On our between-arms task, seven participants with stroke were classified as having a position-mirroring deficit with a mean magnitude of error greater than 10.1°. Position-mirroring accuracy was worse for these participants with stroke, when referencing their paretic arm, than the controls.<h4>Concluding remark</h4>Findings underscore the need for assessing within-arm position-matching deficits, in addition to between-arms position-mirroring deficits when referencing each arm, to comprehensively evaluate an individual's ability to locate their forearm(s). |
| format | Article |
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| institution | DOAJ |
| issn | 1932-6203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
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| series | PLoS ONE |
| spelling | doaj-art-ac92dbbc02fa4cf2bc36583e28bf4f1b2025-08-20T03:01:59ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-011310e020651810.1371/journal.pone.0206518Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks.Netta GurariJustin M DrogosJulius P A Dewald<h4>Background</h4>According to between-arms assessments, more than 50% of individuals with stroke have an impaired position sense. Our previous work, which employed a clinical assessment and slightly differing tasks, indicates that individuals who have a deficit on a between-forearms position-localization task do not necessarily have a deficit on a single-forearm position-localization task.<h4>Objective</h4>Our goal here was to, using robotics tools, determine whether individuals with stroke who have a deficit when matching forearm positions within an arm also have a deficit when mirroring forearm positions between arms, independent of the arm that leads the task.<h4>Methods</h4>Eighteen participants with chronic hemiparetic stroke and nine controls completed a single-arm position-matching experiment and between-arms position-mirroring experiment. For each experiment, the reference forearm (left/right) passively rotated about the elbow joint to a reference target location (flexion/extension), and then the participant actively rotated their same/opposite forearm to match/mirror the reference forearm's position. Participants with stroke were classified as having a position-matching/-mirroring deficit based on a quantitative threshold that was derived from the controls' data.<h4>Results</h4>On our single-arm task, one participant with stroke was classified as having a position-matching deficit with a mean magnitude of error greater than 10.7° when referencing their paretic arm. Position-matching ability did not significantly differ for the controls and the remaining seventeen participants with stroke. On our between-arms task, seven participants with stroke were classified as having a position-mirroring deficit with a mean magnitude of error greater than 10.1°. Position-mirroring accuracy was worse for these participants with stroke, when referencing their paretic arm, than the controls.<h4>Concluding remark</h4>Findings underscore the need for assessing within-arm position-matching deficits, in addition to between-arms position-mirroring deficits when referencing each arm, to comprehensively evaluate an individual's ability to locate their forearm(s).https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0206518&type=printable |
| spellingShingle | Netta Gurari Justin M Drogos Julius P A Dewald Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. PLoS ONE |
| title | Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. |
| title_full | Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. |
| title_fullStr | Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. |
| title_full_unstemmed | Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. |
| title_short | Ability of individuals with chronic hemiparetic stroke to locate their forearms during single-arm and between-arms tasks. |
| title_sort | ability of individuals with chronic hemiparetic stroke to locate their forearms during single arm and between arms tasks |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0206518&type=printable |
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