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Amplitude reduction of the epidural cervical SEPs during voluntary movement

机译：自愿运动过程中硬膜外宫颈SEPs的幅度降低

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Fourteen patients, suffering from chronic pain resistant to pharmacological treatment, underwent epidural electrode implant on the cervical spinal cord (CSC) for neuromodulation. After the median nerve stimulation, somatosensory evoked potentials (SEPs) were recorded from the epidural electrode contacts, from the frontal and the parietal regions contralateral to the stimulated side, from an electrode placed over the sixth cervical vertebra and from the Erb's point. SEPs were recorded at rest and during a voluntary flexion-extension movement of the stimulated wrist. The epidural electrode contacts recorded a triphasic potential (P1-N1-P2). The epidural potential amplitude was significantly decreased during voluntary movement compared with the rest, thus suggesting that the effect of movement on SEPs occurs also at CSC level.
机译：十四名患者，患有慢性疼痛的药理治疗，接受硬膜外电极植入颈椎脊髓（CSC）进行神经调节。在中间神经刺激后，从外膜电极接触，从对侧对侧的外膜电极接触，从刺激的侧面的前部和顶部区域记录躯体感应诱发的电位（SEP），从放置在第六颈椎和ERB的点上。 SEPS在休息和刺激手腕的自愿屈曲 - 延伸运动期间记录。硬膜外电极触点记录了三足电位（P1-N1-P2）。与其余相比，自愿运动期间硬膜外势幅度显着下降，因此表明运动对SEPs的影响也在CSC水平时发生。

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