Objective: To explore effect of high-frequency electrical stimulation of extracellular (high frequency stimulation, HFS) on morphology and metabolism of sympathetic PC12 cells.
目的：研究细胞外高频电刺激(HFS)对PC 12类交感神经细胞的形态及代谢水平的影响。
An attack of RP may also occur after stimulation of the sympathetic nervous system (such as emotional stress, sudden startling).
雷诺现象的发作也可出现在交感神经系统刺激之后(如情绪紧张，突然惊吓)。
Electrical stimulation in the same intensity to cervical sympathetic trunks in guinea pigs only caused the heart rate to quicken but had hardly effects on respiratory activities.
以同样电强度刺激豚鼠颈交感干头端，只引起心率加快效应，对呼吸活动几乎无影响。
METHODS Isometric vasoconstriction of the rabbit saphenous arterial rings was recorded, and the sympathetic nerves of the arterial rings were activated with electrical stimulation.
方法兔离体隐动脉血管环张力记录法及电场刺激诱发血管收缩法。
METHODS Isometric vasoconstriction of the rabbit saphenous arterial rings was recorded, and the sympathetic nerves of the arterial rings were activated with electrical stimulation.
方法兔离体隐动脉血管环张力记录法及电场刺激诱发血管收缩法。
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