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 (0.5Hz and 1.0Hz) with less than 10% average root-mean-square (RMS) tracking error, while 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.
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