IEEE Transactions on Haptics
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From the April-June 2016 issue
Neuromimetic Event-Based Detection for Closed-Loop Tactile Feedback Control of Upper Limb Prostheses
By Luke Osborn, Rahul R. Kaliki, Alcimar B. Soares, and Nitish V. Thakor
Upper limb amputees lack the valuable tactile sensing that helps provide context about the surrounding environment. Here, we utilize tactile information to provide active touch feedback to a prosthetic hand. First, we developed fingertip tactile sensors for producing biomimetic spiking responses for monitoring contact, release, and slip of an object grasped by a prosthetic hand. We convert the sensor output into pulses, mimicking the rapid and slowly adapting spiking responses of receptor afferents found in the human body. Second, we designed and implemented two neuromimetic event-based algorithms, Compliant Grasping and Slip Prevention, on a prosthesis to create a local closed-loop tactile feedback control system (i.e., tactile information is sent to the prosthesis). Grasping experiments were designed to assess the benefit of this biologically inspired neuromimetic tactile feedback to a prosthesis. Results from able-bodied and amputee subjects show the average number of objects that broke or slipped during grasping decreased by over 50 percent and the average time to complete a grasping task decreased by at least 10 percent for most trials when comparing neuromimetic tactile feedback with no feedback on a prosthesis. Our neuromimetic method of closed-loop tactile sensing is a novel approach to improving the function of upper limb prostheses.
Editorials and Announcements
- Read "Designing Effective Refreshable Braille Displays" written by EIC Lynette Jones that discusses an influential paper by Alexander Russomanno and colleagues published in the July-September 2015 issue which examined the features necessary for effective braille reading using a refreshable display.
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ToH is a joint publication of the IEEE Computer Society, IEEE Robotics and Automation Society and the IEEE Consumer Electronics Society.
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