AUTHOR=Ghannadi Borna , Sharif Razavian Reza , McPhee John TITLE=Configuration-Dependent Optimal Impedance Control of an Upper Extremity Stroke Rehabilitation Manipulandum JOURNAL=Frontiers in Robotics and AI VOLUME=5 YEAR=2018 URL=https://www.frontiersin.org/journals/robotics-and-ai/articles/10.3389/frobt.2018.00124 DOI=10.3389/frobt.2018.00124 ISSN=2296-9144