Just noticeable differences for elbow joint torque feedback

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dc.contributor.authorKim, Huberten
dc.contributor.authorAsbeck, Alan T.en
dc.date.accessioned2021-12-10T19:57:05Zen
dc.date.available2021-12-10T19:57:05Zen
dc.date.issued2021-12-07en
dc.description.abstractJoint torque feedback is a new and promising means of kinesthetic feedback imposed by a wearable device. The torque feedback provides the wearer temporal and spatial information during a motion task. Nevertheless, little research has been conducted on quantifying the psychophysical parameters of how well humans can perceive external torques under various joint conditions. This study aims to investigate the just noticeable difference (JND) perceptual ability of the elbow joint to joint torques. The paper focuses on the ability of two primary joint proprioceptors, the Golgi-tendon organ (GTO) and muscle spindle (MS), to detect elbow torques, since touch and pressure sensors were masked. We studied 14 subjects while the arm was isometrically contracted (static condition) and was moving at a constant speed (dynamic condition). In total there were 10 joint conditions investigated, which varied the direction of the arm’s movement and the preload direction as well as torque direction. The JND torques under static conditions ranged from 0.097 Nm with no preload to 0.197 Nm with a preload of 1.28 Nm. The maximum dynamic JND torques were 0.799 Nm and 0.428 Nm, when the arm was flexing and extending at 213 degrees per second, respectively.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKim, H., Asbeck, A.T. Just noticeable differences for elbow joint torque feedback. Sci Rep 11, 23553 (2021). https://doi.org/10.1038/s41598-021-02630-3en
dc.identifier.doihttps://doi.org/10.1038/s41598-021-02630-3en
dc.identifier.urihttp://hdl.handle.net/10919/106931en
dc.identifier.volume11en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleJust noticeable differences for elbow joint torque feedbacken
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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