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Intraspinal microstimulation is a neuroprosthetic approach for activating specific spinal reflexes using penetrating electrodes chronically implanted into spinal cord. Artificial control of spinally mediated functions, such as arm and leg movement or bladder voiding, may be necessary in spinal cord injury, multiple sclerosis, cerebral palsy, amyotrophic lateral sclerosis, and spina bifida, when the...
C5/C6 tetraplegic patients and transhumeral amputees may be able to use voluntary shoulder motion as command signals for a functional electrical stimulation (FES) system or a transhumeral prosthesis. Such prostheses require, at the most basic level, the control of endpoint position in three dimensions, hand orientation, and grasp. Spatiotemporal synergies exist between the proximal and distal arm...
Nerve cuff electrodes were used intraoperatively to stimulate peripheral nerves to test electrode selectivity in the human upper extremity. Subjects were recruited from patients undergoing upper extremity nerve repair procedures. The nerves were stimulated through different contacts in the cuff and with varying parameters. Estimates of threshold and selectivity data were recorded. The stimulation...
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