Microneurographic Research on Sympathetic Nerve Responses to Environmental Stimuli in Humans
نویسندگان
چکیده
منابع مشابه
Microneurographic studies of the mechanisms of sympathetic nerve responses to static exercise in humans.
The purpose of this study was to determine the contribution of muscle afferents and central command in regulating sympathetic nerve activity during static exercise in humans. In 20 healthy subjects, we recorded heart rate, arterial pressure, and efferent sympathetic nerve activity in the leg during arm exercise. Microelectrodes were inserted percutaneously into a fascicle of the peroneal nerve ...
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Hemorrhage remains a major cause of mortality following traumatic injury in both military and civilian settings. Lower body negative pressure (LBNP) has been used as an experimental model to study the compensatory phase of hemorrhage in conscious humans, as it elicits central hypovolemia like that induced by hemorrhage. One physiological compensatory mechanism that changes during the course of ...
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Although previous studies in both animals and humans have suggested that cardiac baroreceptors modulate reflex sympathetic vasoconstriction during exercise, more recent studies in conscious animals have not supported this view. To further test this concept in humans, we measured sympathetic nerve discharge with intraneural microelectrodes while we used static handgrip to activate the exercise p...
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We used intraneural recordings of sympathetic nerve activity in conscious humans to determine if central command increases sympathetic discharge to resting skeletal muscle during static exercise. In nine healthy subjects, we measured arterial pressure, heart rate, and muscle sympathetic nerve activity with microelectrodes in the peroneal nerve of the resting leg during 1) static handgrip at 15%...
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In nine sedentary subjects (16.5±0.4 years, mean±SEM) we measured blood pressure (Finapres device), heart rate (electrocardiogram), and postganglionic muscle sympathetic nerve activity (micToneurography from the peroneal nerve) at rest and during intravenous infusion of phenylephrine and nitroprusside. These measurements were performed before and after 10 weeks of endurance training (2 h/d, 5 d...
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ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 1998
ISSN: 0021-521X,1881-1396
DOI: 10.2170/jjphysiol.48.99