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为探讨内皮依赖性舒张因子（EDRF／NO）对耳蜗微血管自律运动特性的影响。采用微循环数字图像检测和分析方法，根据微动脉管径动态变化的跟踪测量结果，利用“快速富里叶频谱转换（FFT）”，对耳蜗微血管自律运动的频率特性、收缩特性的特征参数，进行了定量分析。结果表明：在正常状态下，耳蜗微动脉存在运动幅度较小的自律运动。实验发现EDRF／NO能显著增加激动脉自律运动的频率及振幅，增强耳蜗微循环的功能，使耳蜗血流量增加。
To investigate the effect of endothelium-dependent relaxing factor (EDRF / NO) on the autonomic motor characteristics of cochlear microvasculature. Using the microcirculation digital image detection and analysis method, according to the tracking measurement of the dynamic changes of the arterioles’ diameter, the frequency characteristic and systolic characteristic parameters of the cochlear microvascular autonomic movement were obtained by using “Fast Fourier Transform (FFT)” Quantitative analysis. The results show that under normal conditions, there is a small voluntary movement of cochlear micro-arteries. The experiment found that EDRF / NO can significantly increase the frequency and amplitude of the autonomic artery stimulation, enhance the microcirculation function of the cochlea, and increase the cochlear blood flow.