REGIONAL SIMILARITIES AND DIFFERENCES IN THERMOREGULATORY VASOMOTOR AND SUDOMOTOR TONE
REGIONAL SIMILARITIES AND DIFFERENCES IN THERMOREGULATORY VASOMOTOR AND SUDOMOTOR TONE
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DOI：
10.1113/jphysiol.1980.sp013414
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发表时间：
1980-01-01
影响因子：
5.5
通讯作者：
WALLIN, BG
中科院分区：
文献类型：
--
作者：
BINI, G;HAGBARTH, KE;WALLIN, BG
同时记录以下神经对的皮肤神经交感神经活动：左和右正中神经、正中神经和腓神经、左和右腓神经、前臂后皮神经和桡浅神经、前臂后皮神经和正中神经。这些记录是在暴露于不同环境温度的健康受试者身上进行的。从神经支配区记录皮肤电反应和脉搏体积描记图。血管收缩脉冲爆发记录同时从正中神经和腓神经暴露在寒冷的环境中表现出惊人的相似性，相对于个人爆发的时间和强度。在暴露于温暖的环境中，从前臂后皮神经和桡浅神经同时记录的催汗爆发之间也观察到类似的强相关性。在某些情况下，如在暴露于适度温暖的环境或情绪压力，时间相关性也观察到血管收缩爆发记录从正中和催汗爆发记录同时从前臂后皮神经。双神经记录提供的证据表明，在远端无毛皮肤区域，反射性温度调节功能主要是通过血管收缩纤维执行，而催汗纤维只在相对较高的温度下才开始行动。在前臂和手背侧的多毛皮肤中，反射性温度调节在很大程度上通过泌汗纤维执行。
Skin nerve sympathetic activity was recorded simultaneously from the following pairs of nerves: left and right median, median and peroneal, left and right peroneal, posterior cutaneous antebrachial and superficial radial, posterior cutaneous antebrachial and median. The recordings were performed on healthy subjects exposed to different ambient temperatures. Electrodermal responses and pulse plethysmograms were recorded from the neural innervation zones. Vasoconstrictor impulse bursts recorded simultaneously from the median and peroneal nerves during exposure to a cold environment showed a striking similarity with respect to the timing and strength of individual bursts. A similar strong correlation was observed also among sudomotor bursts recorded simultaneously from the posterior cutaneous antebrachial and superficial radial nerve during exposure to a warm environment. On some occasions, such as during exposure to a moderately warm environment or emotional stress, a temporal correlation was also observed between vasoconstrictor bursts recorded from the median and sudomotor bursts recorded simultaneously from the posterior cutaneous antebrachial nerve. The double nerve recordings provided evidence that in the distal glabrous skin areas, reflex thermoregulatory functions are mainly executed via vasoconstrictor fibers whereas sudomotor fibers are brought into action only at relatively high temperature. In the hairy skin on the dorsal side of forearm and hand, reflex thermoregulation is to a large extent executed via sudomotor fibers.