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外周神经的人工刺激需要研制多电极器件,这些电极能选择而准确地分别刺激神经纤维和小块组织。近来,人们已研制了一种运用硅技术的多电极阵列,以后用了灵敏性和选择性测量的实验平行数据和模型计算。该阵列包含十二个白金电极底座(10×50μm,间距50μm),它们安在厚45μm的针形硅衬底上和一个Si_3N_4绝缘玻璃罩层上。在刺激老鼠伸肌长肌束运动神经纤维的致敏实验中,电极针端被插入到老鼠的腓骨神经中。精确的计算和实验结果得出结论:由刺激一个运动神经元得到的
Artificial stimulation of peripheral nerves requires the development of multi-electrode devices that can selectively and accurately stimulate nerve fibers and small pieces of tissue, respectively. Recently, a multi-electrode array using silicon technology has been developed that later uses experimental parallel data and model calculations for sensitivity and selectivity measurements. The array consists of twelve platinum electrode pads (10 x 50 μm, 50 μm pitch) mounted on a 45 μm thick pin-shaped silicon substrate and a Si_3 N_4 insulating glass mask. In sensitization experiments that stimulated the motor nerve fibers of the longissimus muscle bundles of rats, the needle end of the electrode was inserted into the rat’s peroneal nerve. Accurate calculations and experimental results conclude: obtained by stimulating a motor neuron