title: Motion control of the rabbit ankle joint with a flat interface nerve electrode.
abstract: BACKGROUND
  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: Neural Engineering Center, Department of Biomedical Engineering, Case Western Reserve University, Wickenden 112, Cleveland, Ohio, 44106, USA.
authors: Hyun-Joo
authors: HJ
authors: Park
authors: Neural Engineering Center, Department of Biomedical Engineering, Case Western Reserve University, Wickenden 112, Cleveland, Ohio, 44106, USA.
authors: Dominique M
authors: DM
authors: Durand
mesh_terms: D000465:Algorithms; D000818:Animals; D000843:Ankle Joint / Q000502:physiology*; D004558:Electric Stimulation; D004567:Electrodes, Implanted; D025461:Feedback, Physiological; D009068:Movement / Q000502:physiology*; D011817:Rabbits; D012584:Sciatic Nerve / Q000502:physiology*
keywords: ankle; functional electrical stimulation; motion control; nerve stimulation; sciatic nerve