Journal
HAPTICS: SCIENCE, TECHNOLOGY, APPLICATIONS, EUROHAPTICS 2022
Volume 13235, Issue -, Pages 433-435Publisher
SPRINGER INTERNATIONAL PUBLISHING AG
Keywords
Sensory substitution; Wearable devices; Proprioception
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Researchers have proposed a sensory substitution device that uses detectable haptic stimuli to communicate proprioceptive feedback for individuals with PIEZO2 loss of function. They developed a wearable prototype that maps measurements of elbow movement to deep pressure applied to the forearm. Future work includes testing the device on healthy individuals and those with PIEZO2 loss of function, as well as improving the design of the device.
A rare genetic condition, PIEZO2 loss of function (LOF) is characterized by absence of proprioception and light touch, which makes functional tasks (e.g., walking, manipulation) difficult. There are no pharmacological treatments or assistive technologies available for individuals with PIEZO2-LOF. We propose a sensory substitution device that communicates proprioceptive feedback via detectable haptic stimuli. We created a wearable prototype that maps measurements of elbow movement to deep pressure applied to the forearm. The prototype applies up to 18 N, includes an embedded force sensor, and is programmable to allow for various angle-to-pressure mappings. Future work includes comparing proprioceptive acuity and movement ability with and without the device in healthy and PIEZO2-LOF individuals, developing low-profile devices using soft robotics, providing sensory substitution for multiple joints simultaneously, and encoding additional aspects of joint dynamics.
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