刺激频率对下肢神经刺激的脊髓和头皮体感诱发电位的影响。
The effect of stimulus frequency on spinal and scalp somatosensory evoked potentials to stimulation of nerves in the lower limb.
作者信息
Pelosi L, Balbi P, Caruso G
机构信息
Department of Clinical Neurophysiology, II School of Medicine, University of Naples, Italy.
出版信息
Electroencephalogr Clin Neurophysiol Suppl. 1990;41:149-52. doi: 10.1016/b978-0-444-81352-7.50019-4.
The effect of variation in the stimulus frequency on spinal and cortical somatosensory evoked potentials (SSEPs) to common peroneal nerve stimulation at the knee (CPN-K) and tibial nerve stimulation at the ankle (TN-A) was studied in 11 healthy subjects. Six stimulus frequencies, 0.7, 1.5, 3.0, 5.0, 7.0 and 10.0 Hz, were used in random order. With increasing stimulus rate spinal responses remained unchanged. By contrast, early cortical responses became significantly reduced in amplitude or undetectable for stimulation frequencies above 3.0 Hz for the CPN-K and 5.0 Hz for the TN-A. In 2 subjects the configuration and the latency of CPN-K SSEPs were affected by stimulus frequency. Similar changes were not observed in TN-A SSEPs.
在11名健康受试者中研究了刺激频率变化对膝部腓总神经刺激（CPN-K）和踝部胫神经刺激（TN-A）所诱发的脊髓和皮质体感诱发电位（SSEP）的影响。使用了6种刺激频率，分别为0.7、1.5、3.0、5.0、7.0和10.0Hz，采用随机顺序。随着刺激速率增加，脊髓反应保持不变。相比之下，对于CPN-K，刺激频率高于3.0Hz，以及对于TN-A，刺激频率高于5.0Hz时，早期皮质反应的幅度显著降低或无法检测到。在2名受试者中，CPN-K SSEP的波形和潜伏期受刺激频率影响。在TN-A SSEP中未观察到类似变化。
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