IEEE Transactions on Biomedical Engineering
Featured Articles
STEER: 3D Printed Guide for Nerve Regrowth Control and Neural Interface in Non-Human Primate Model
Agata Blasiak, Kian Ann Ng, Marshal Dian Sheng Wong, Chne-Wuen Tsai, Astrid Rusly, Gil Gerald Lasam Gammad, Kai Voges, Camilo Libedinsky, Shih Cheng Yen, Nitish V. Thakor, Amitabha Lahiri
Our work aims to address the challenging problem of reactive-fibrosis in establishing a long term peripheral neural interface (PNI). We present a novel interface – STEER PNI – that harnessed the fibro-axonal growth from the nerve and incorporated fibrosis in its design. STEER PNI consists of a synthetic guide that steers fibro-axonal growth toward encapsulation of the electrodes incorporated within the guide itself. We validated the functionality of this interface in macaques with electrophysiology and immunohistochemistry. This design provides a practical approach for creating long term neural interfaces with applications in neuro-prosthetics and beyond...
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Posted on 28 FEB 2022
Featured Articles
Automatic control of prosthetic socket size for people with transtibial amputation: Implementation and Evaluation
Ethan J. Weathersby, Joseph L. Garbini, Brian G. Larsen, Jake B. McLean, Andrew C. Vamos, Joan E. Sanders
People wearing a lower leg prosthesis often experience discomfort or pain during the day because of changes in socket fit. To solve this problem, we created a motor-actuated prosthetic socket that automatically maintains socket fit by continuous adjustment of the socket size. A proportional-integral (PI) control system is implemented to adjust socket size based on data collected from an inductive sensor embedded within the socket wall. The sensed distance is representative of limb-to-socket distance. Experiments on participants with transtibial limb amputation verify that the system properly maintains and responds to a change in set point to maintain socket fit...
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Posted on 30 DEC 2020
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Limb Position Tolerant Pattern Recognition for Myoelectric Prosthesis Control with Adaptive Sparse Representations from Extreme Learning
Joseph L. Betthauser, Christopher L. Hunt, Luke E. Osborn, Matthew R. Masters, Gyorgy Levay, Rahul R. Kaliki, Nitish V. Thakor
Electromyogram (EMG) signals can be used to decode the intended movements of an amputee for control of a dexterous upper-limb prosthesis. However, normal prosthesis use involves changes in upper-limb positions that influence the EMG signals, hindering the ability of pattern...
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Posted on 25 MAR 2018
Featured Articles
Design and Fabrication of a Six Degree-of-Freedom Open Source Hand
Currently, most externally powered prostheses are controlled using electromyography (or EMG), which is the measure of the electrical signals that are produced when voluntary muscle is contracted. One of the major problems is that there are a limited number of...
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Posted on 3 MAY 2016
Featured Articles
Biomechanical Effects of Stiffness in Parallel with the Knee Joint during Walking
Kamran Shamaei, Massimo Cenciarini, Albert A. Adams, Karen N. Gregorczyk, Jeffrey M. Schiffman, Aaron M. Dollar
Lower-extremity exoskeletons have been actively investigated in the past few decades intending to augment the locomotion performance of able-bodied users in terms of metabolic cost, load carrying capacity, fatigue, and muscle force generation. While development efforts have been extensive, lower-limb...
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Posted on 26 SEP 2015