Wallin B G, Sundlöf G, Eriksson B M, Dominiak P, Grobecker H, Lindblad L E
Acta Physiol Scand. 1981 Jan;111(1):69-73. doi: 10.1111/j.1748-1716.1981.tb06706.x.
Recordings of multiunit sympathetic activity were made in muscle branches of the peroneal nerve in 22 healthy subjects at rest in recumbent position. Nerve activity was quantitated in terms of burst incidence (number of pulse synchronous sympathetic bursts per 100 heart beats or per min). In a separate session, 4-45 months later, blood was drawn from an antecubital vein for noradrenaline analysis. Both sympathetic activity and plasma concentrations of noradrenaline varied widely between subjects and both parameters increased with age. There was a significant positive correlation between a subject's level of sympathetic activity and his plasma concentration of noradrenaline. It is suggested that overflow of transmitter from sympathetic terminals in muscles contributes significantly to plasma levels of noradrenaline at rest.
在22名处于卧位休息状态的健康受试者的腓总神经肌肉分支处记录多单位交感神经活动。根据爆发发生率（每100次心跳或每分钟的脉冲同步交感神经爆发次数）对神经活动进行定量。在另一次检查中，4至45个月后，从前臂静脉抽取血液进行去甲肾上腺素分析。交感神经活动和血浆去甲肾上腺素浓度在受试者之间差异很大，且这两个参数均随年龄增加。受试者的交感神经活动水平与其血浆去甲肾上腺素浓度之间存在显著正相关。提示肌肉中交感神经末梢释放的递质溢出对静息时血浆去甲肾上腺素水平有显著贡献。
