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Med Eng Phys. 2013 Feb;35(2):269-76. doi: 10.1016/j.medengphy.2011.09.002. Epub 2011 Oct 5.

Inertia sensor-based guidance system for upperlimb posture correction.

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School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore.


Stroke rehabilitation is labor-intensive and time-consuming. To assist patients and therapists alike, we propose a wearable system that measures orientation and corrects arm posture using vibrotactile actuators. The system evaluates user posture with respect to a reference and gives feedback in the form of vibration patterns. Users correct their arm posture, one DOF at a time, by following a protocol starting from the shoulder up to the forearm. Five users evaluated the proposed system by replicating ten different postures. Experimental results demonstrated system robustness and showed that some postures were easier to mimic depending on their naturalness.

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