Kramer J M, Waldrop T G
Department of Kinesiology, University of Illinois, Urbana-Champaign, USA.
J Vestib Res. 1998 Jan-Feb;8(1):71-80.
Precise regulatory signals are required in order to adjust the cardiovascular and respiratory systems to meet the demands of exercise. Two neural mechanisms, central command and a reflex originating in contracting muscles, are known to play a large role in exercise-associated adjustments in cardiovascular and respiratory activity. The extent to which other regulatory reflexes, such as vestibulo-autonomic reflexes, are able to impact upon the cardiovascular and respiratory systems during exercise is largely unknown. Further, brain regions that may integrate these control mechanisms are only starting to be investigated. We propose that medullary brain nuclei may integrate both exercise and vestibular signals to produce a more coordinated, and therefore efficient, means of adaptation to exercise in a gravitational environment.
为了调整心血管和呼吸系统以满足运动需求，需要精确的调节信号。已知两种神经机制，即中枢指令和源自收缩肌肉的反射，在运动相关的心血管和呼吸活动调节中发挥着重要作用。在运动过程中，其他调节反射，如前庭自主反射，对心血管和呼吸系统的影响程度在很大程度上尚不清楚。此外，可能整合这些控制机制的脑区才刚刚开始被研究。我们提出，延髓脑核可能整合运动和前庭信号，以产生一种更协调、因而更有效的方式，来适应重力环境中的运动。
