Anani A, Körner L
Med Prog Technol. 1979 Jun 15;6(3):131-5.
The necessity for a sensory feedback system that would enhance patient acceptability of motorized hand prostheses is now generally acknowledged. Afferent electrical stimulation of the nerves in the amputation stump can convey sensory feedback from prostheses with the advantage of eliciting sensations in the phantom image of the lost hand. Experiments with percutaneous nerve stimulation of the amputation stump in below-elbow amputees showed that with stable electrode conditions, amplitude modulated stimulation was better than frequency modulated stimulation in terms of accuracy, delay, and transinformation both with intermittent and uninterrupted stimulation. With unstable electrode conditions, different results were noticed, since amplitude modulated stimulation is very sensitive even to minor changes in electrode position. It is concluded that afferent electrical nerve stimulation with adequate training and stable electrodes had characteristics of accuracy, transinformation and delay which are good enough to make it a suitable method of conveying information in a prosthesis feedback system.
现在人们普遍认识到，需要一种能够提高患者对电动假手接受度的感觉反馈系统。对截肢残端神经进行传入电刺激可以传递来自假肢的感觉反馈，其优点是能在失去的手的幻肢影像中引发感觉。对肘下截肢者的截肢残端进行经皮神经刺激的实验表明，在电极条件稳定的情况下，无论是间歇性刺激还是不间断刺激，调幅刺激在准确性、延迟和传输信息量方面都优于调频刺激。在电极条件不稳定时，会观察到不同的结果，因为调幅刺激即使对电极位置的微小变化也非常敏感。结论是，经过适当训练并使用稳定电极的传入电神经刺激具有足够好的准确性、传输信息量和延迟特性，足以使其成为假肢反馈系统中一种合适的信息传递方法。
