Research on the OUCH wrist-worn pneumatic tactile stimulation device
What happened
Sherry Choi, Sitao Sunny Li, and other authors published a paper proposing and characterizing a wrist-worn pneumatic tactile stimulation device, OUCH. The device uses stacked pneumatic bladder actuators, a rigid indenter, and a flexible shim that buckles at a set load, so that the indenter contacts the skin only when actuated, and is used to apply controlled, repeatable mechanical nociceptive stimulation to the wrist. The authors report that at a bladder inflation pressure of 200 kPa, the indenter contact pressure is estimated to reach 18,500 kPa, more than 25 times that of the tip of a commercial handheld pressure algometer, while requiring a smaller total force; in preliminary perceptual tests, the force required for this indenter to elicit discomfort was about 89% lower than that of the pressure algometer. These values are reported by the authors and remain preliminary test results.
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- arXiv cs.ROOUCH: Objective, Uniform, Controlled Haptic Stimulation Wrist-Worn Device for Automated Neurological Assessment
OUCH is a wrist-worn pneumatic haptic stimulation device that uses stacked pneumatic pouch actuators, a rigid indenter, and a compliant spacer designed to buckle at a set load, so that the indenter contacts the skin only during actuation. At 200 kPa pouch inflation pressure, its indenter's contact pressure is estimated to reach 18,500 kPa, more than 25 times that of a commercially available handheld pressure algometer tip, while requiring less total force. In preliminary perceptual testing, the force required for this indenter to elicit discomfort was about 89% lower than that of the pressure algometer, providing a basis for controllable, repeatable noxious stimulation at the wrist.
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