Gavriysky V S
Department of Physiology and Biochemistry, National Sports Academy, Sofia, Bulgaria.
J Auton Nerv Syst. 1995 Sep 5;54(3):247-52. doi: 10.1016/0165-1838(95)00017-r.
The influence of the Valsalva maneuver on the pupillary light reflex and on the parameters of human pupillogram were studied in 9 normal volunteers (mean age 21.0 years). The consensual pupillary reactions to light were recorded using a infrared-reflecting pupillograph; pupillogram records were processed off-line by a computer system. Latency time increased during the Valsalva maneuver and normalized in the first minute after its end. No significant changes were found in constriction time. Half-redilatation time showed the opposite dynamics of latency time. The amplitude diminished during Valsalva maneuver and in the first minute after it. These results suggest a possible alteration of the autonomic nervous regulation during Valsalva maneuver and especially some changes in parasympathetic outflow to human iris sphincter. The possible effect of prevailing parasympathetic or sympathetic activity on pupillometry parameters during some phases of the Valsalva maneuver and after its end is discussed.
在9名正常志愿者（平均年龄21.0岁）中研究了瓦尔萨尔瓦动作对瞳孔光反射和人体瞳孔图参数的影响。使用红外反射瞳孔计记录对光的同感性瞳孔反应；瞳孔图记录由计算机系统离线处理。在瓦尔萨尔瓦动作期间潜伏期延长，并在动作结束后的第一分钟恢复正常。收缩时间未发现明显变化。半再扩张时间呈现出与潜伏期相反的动态变化。在瓦尔萨尔瓦动作期间及其后的第一分钟内，幅度减小。这些结果表明，瓦尔萨尔瓦动作期间自主神经调节可能发生改变，尤其是副交感神经向人虹膜括约肌的传出有一些变化。讨论了在瓦尔萨尔瓦动作的某些阶段及其结束后，主要的副交感神经或交感神经活动对瞳孔测量参数可能产生的影响。
