Tarler Matthew D, Mortimer J Thomas
Applied Neural Control Laboratory, Biomedical Engineering Department, Case Western Reserve University Cleveland, OH 44106, USA.
IEEE Trans Neural Syst Rehabil Eng. 2007 Mar;15(1):104-10. doi: 10.1109/TNSRE.2007.891377.
Linear summation of torque was observed while applying selective activation to two different motor fascicles in the cat sciatic nerve. The excitatory stimulus was applied to two or more contacts housed in a four contact self-sizing spiral cuff electrode. To achieve a linear summation of torque, a delay between the two stimuli that was longer than the length of the facilitatory period but less than the length of the refractory period was used. Using a 900-micros delay between pulses, linear summation of two different torque outputs was successfully achieved in 125 out of 129 trials across five cats. These trials were performed using cuff electrodes that were in place for periods ranging up to 352 days. The results of these studies support the hypothesis that a single self-sizing spiral cuff with multiple contacts and a single lead may be used in place of several muscle-based electrodes each with its own separate lead.
在对猫坐骨神经的两个不同运动束进行选择性激活时，观察到了扭矩的线性总和。兴奋性刺激施加于一个四触点自定尺寸螺旋袖套电极中的两个或更多触点。为了实现扭矩的线性总和，使用了两个刺激之间的延迟，该延迟长于易化期的长度但短于不应期的长度。在五只猫的129次试验中的125次试验中，通过在脉冲之间使用900微秒的延迟，成功实现了两种不同扭矩输出的线性总和。这些试验使用的袖套电极在位时间长达352天。这些研究结果支持这样一种假设，即单个具有多个触点和单根导线的自定尺寸螺旋袖套可用于替代多个各自带有单独导线的基于肌肉的电极。
