头低位模拟失重对正常人视觉诱发电位的影响

发布时间：2018-06-23 19:47

本文选题：头低位 + 视觉诱发电位　；参考：《眼科新进展》2009年10期

【摘要】：目的观察头低位模拟失重状态下正常人视觉诱发电位的变化。方法选取6名男性健康志愿者,-6°头低位卧床模拟失重状态,在受试前、受试后第2天及第5天分别测量双眼在不同空间频率下的视觉诱发电位,标记N75、P100波潜伏期和波幅。结果双眼P100波潜伏期在不同空间频率下均无显著改变;波幅在高空间频率下有显著改变,右眼受试后第2天及第5天分别是(7.50±3.08)μV、(8.05±4.99)μV,与受试前(10.61±4.32)μV比较差异均有统计学意义(P均0.05);左眼受试后第2天及第5天分别是(8.29±3.32)μV、(6.47±3.66)μV,与受试前(10.16±4.13)μV比较差异均具有统计学意义(P均0.05);在中空间频率及低空间频率下差异均无统计学意义(P均0.05)。N75波在各空间频率下潜伏期有所改变,而波幅无明显改变,右眼在高空间频率及中空间频率下、左眼在低空间频率下,潜伏期随时间进展均发生显著延长,差异均有统计学意义(P均0.05)。结论头低位卧床状态下可导致视觉诱发电位改变,影响正常人的精细视觉功能。
[Abstract]:Objective to observe the changes of visual evoked potential (VEP) in normal subjects under head-low simulated weightlessness. Methods six male healthy volunteers were selected to study the simulated weightlessness in 6 掳head-low bed rest. The visual evoked potentials (VEP) of the eyes were measured at different spatial frequencies before, 2 and 5 days after the test, and the latency and amplitude of N75P100 wave were labeled. Results there was no significant change in the latency of P100 wave in both eyes at different spatial frequencies, while the amplitude of P100 wave changed significantly at high spatial frequency. The second and fifth days after the right eye test were (7.50 卤3.08) 渭 V and (8.05 卤4.99) 渭 V, respectively, which were significantly different from those before the test (10.61 卤4.32) 渭 V (P 0.05), and the second and fifth days after the left eye test were (8.29 卤3.32) 渭 V, (6.47 卤3.66) 渭 V, and (10.16 卤4.13) 渭 V, respectively. There was no significant difference between middle and low spatial frequencies (P 0.05). But the amplitude of the wave did not change obviously. The latency of the right eye and the left eye in the low spatial frequency and the middle spatial frequency were significantly prolonged with time (P 0.05). Conclusion the changes of visual evoked potential (VEP) in head-low bed state can affect the fine visual function of normal people.
【作者单位】：解放军第306医院眼科;
【基金】：全军“十一五”科技攻关项目基金资助(编号:06G003)~~
【分类号】：R85

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