Short-latency somatosensory evoked potentials.
Short-latency somatosensory evoked potentials.
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短潜伏期体感诱发电位。
DOI：
10.1001/archneur.1978.00500350010003
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发表时间：
1978
影响因子：
--
通讯作者：
W. Wiederholt
中科院分区：
文献类型：
--
作者：
M. Kritchevsky;W. Wiederholt
在20名接受正中神经刺激的受试者中，使用膝、额和耳参考记录研究了体感诱发电位（SEP）的短潜伏期成分。识别出6个电位（P10、P12、P14、N19、P20、P23）。电位P10似乎起源于臂丛神经，P12最可能产生于背柱核和内侧丘系，P14可能起源于丘脑，但经常是双叶的，可能有第二个发生器源，N19可能起源于感觉辐射或皮质。P20的起源尚不清楚，P23似乎产生于对侧躯体感觉皮层。临床上，我们建议使用4 Hz的右侧、左侧和双侧正中神经刺激。刺激的强度应至少产生一个小拇指抽搐，只有膝盖参考记录，所有的早期电位都被看到。
Short-latency components of the somatosensory evoked potential (SEP) were studied in 20 subjects who had median nerve stimulation using knee, forehead, and ear reference recordings. Six potentials were identified (P10, P12, P14, N19, P20, P23). Potential P10 seems to originate in the brachial plexus, P12 most likely is generated in dorsal column nuclei and medial lemniscus, P14 is probably thalamic in origin but is frequently bilobed and may have a second generator source, and N19 may originate in sensory radiation or cortex. The origin of P20 is unclear, and P23 appears to be generated in the contralateral somatosensory cortex. Clinically, we recommend using right, left, and bilateral median nerve stimulation at 4 Hz. Intensity of stimulus should produce at least a small thumb twitch, it was only with knee reference recording that all early potentials were seen.