Hyun-Joo Park1, Dominique M Durand1. 1. Neural Engineering Center, Department of Biomedical Engineering, Case Western Reserve University, Wickenden 112, Cleveland, Ohio, 44106, USA.
Abstract
INTRODUCTION: A flat interface nerve electrode (FINE) has been shown to improve fascicular and subfascicular selectivity. A recently developed novel control algorithm for FINE was applied to motion control of the rabbit ankle. METHODS: A 14-contact FINE was placed on the rabbit sciatic nerve (n = 8), and ankle joint motion was controlled for sinusoidal trajectories and filtered random trajectories. To this end, a real-time controller was implemented with a multiple-channel current stimulus isolator. RESULTS: The performance test results showed good tracking performance of rabbit ankle joint motion for filtered random trajectories and sinusoidal trajectories (0.5 Hz and 1.0 Hz) with <10% average root-mean-square (RMS) tracking error, whereas the average range of ankle joint motion was between -20.0 ± 9.3° and 18.1 ± 8.8°. CONCLUSIONS: The proposed control algorithm enables the use of a multiple-contact nerve electrode for motion trajectory tracking control of musculoskeletal systems.
INTRODUCTION: A flat interface nerve electrode (FINE) has been shown to improve fascicular and subfascicular selectivity. A recently developed novel control algorithm for FINE was applied to motion control of the rabbit ankle. METHODS: A 14-contact FINE was placed on the rabbit sciatic nerve (n = 8), and ankle joint motion was controlled for sinusoidal trajectories and filtered random trajectories. To this end, a real-time controller was implemented with a multiple-channel current stimulus isolator. RESULTS: The performance test results showed good tracking performance of rabbit ankle joint motion for filtered random trajectories and sinusoidal trajectories (0.5 Hz and 1.0 Hz) with <10% average root-mean-square (RMS) tracking error, whereas the average range of ankle joint motion was between -20.0 ± 9.3° and 18.1 ± 8.8°. CONCLUSIONS: The proposed control algorithm enables the use of a multiple-contact nerve electrode for motion trajectory tracking control of musculoskeletal systems.
Authors: Sarah Prenton; Laurence P Kenney; Claire Stapleton; Glen Cooper; Mark L Reeves; Ben W Heller; Mohammad Sobuh; Anthony T Barker; Jamie Healey; Timothy R Good; Sibylle B Thies; David Howard; Tracey Williamson Journal: Arch Phys Med Rehabil Date: 2014-05-17 Impact factor: 3.966
Authors: Ronald Sahyouni; Amin Mahmoodi; Jefferson W Chen; David T Chang; Omid Moshtaghi; Hamid R Djalilian; Harrison W Lin Journal: Neurosurg Rev Date: 2017-10-23 Impact factor: 3.042