Direct neural sensory feedback and control of a prosthetic arm
Direct neural sensory feedback and control of a prosthetic arm
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DOI：
10.1109/tnsre.2005.856072
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发表时间：
2005-12-01
影响因子：
4.9
通讯作者：
Horch, KW
中科院分区：
文献类型：
--
作者：
Dhillon, GS;Horch, KW
有证据表明，通过提供适当的、分级的、远端的触觉和关节运动感觉的系统，截肢者对现代假肢的接受度将显着提高，并且更自然的控制机制将改善假肢的功能。我们最近证明，可以将电极植入截肢者周围神经残端的各个束中，通过这些电极的刺激可以产生涉及截肢者幻手的分级、离散的触摸或运动感觉，并且与通过这些电极尝试进行幻肢运动相关的运动神经元活动的记录可以用作分级控制信号。我们在此报告，这种方法允许截肢者在没有视觉输入的情况下判断和设置假肢的握力和关节位置，从而为假肢更好地融入截肢者的身体图像提供了基础。我们相信这是截肢者人工手臂的直接神经反馈和直接神经控制的首次演示。
Evidence indicates that user acceptance of modern artificial limbs by amputees would be significantly enhanced by a system that provides appropriate, graded, distally referred sensations of touch and joint movement, and that the functionality of limb prostheses would be improved by a more natural control mechanism. We have recently demonstrated that it is possible to implant electrodes within individual fascicles of peripheral nerve stumps in amputees, that stimulation through these electrodes can produce graded, discrete sensations of touch or movement referred to the amputee's phantom hand, and that recordings of motor neuron activity associated with attempted movements of the phantom limb through these electrodes can be used as graded control signals. We report here that this approach allows amputees to both judge and set grip force and joint position in an artificial arm, in the absence of visual input, thus providing a substrate for better integration of the artificial limb into the amputee's body image. We believe this to be the first demonstration of direct neural feedback from and direct neural control of an artificial arm in amputees.