Eshel D, Grossman Y, Priel Z
Am J Physiol. 1985 Jul;249(1 Pt 1):C160-5. doi: 10.1152/ajpcell.1985.249.1.C160.
Ciliary beating frequency in tissue culture from frog palate and isolated lung was optically examined using instrumentation that was adjusted to measure a fraction of the surface area of a single ciliary cell. Consecutive 1-s segments of the analogue signal were fast Fourier transformed (FFT) to obtain a power spectrum. At room temperature, these power spectra changed over time from 1 s to the next. Each spectrum contained several dominant frequencies of similar intensities. Cooling the preparation resulted in a single-peak spectrum that was constant over time. A mathematical model is proposed to simulate these findings. The results and the mathematical model support the hypothesis that ciliary beating frequency fluctuates over short periods of time.
利用经过调整以测量单个纤毛细胞部分表面积的仪器，对青蛙腭部和离体肺组织培养物中的纤毛跳动频率进行了光学检测。对模拟信号连续的1秒片段进行快速傅里叶变换（FFT）以获得功率谱。在室温下，这些功率谱随时间从1秒到下一秒发生变化。每个谱都包含几个强度相似的主导频率。冷却标本会产生一个随时间恒定的单峰谱。提出了一个数学模型来模拟这些发现。结果和数学模型支持纤毛跳动频率在短时间内波动的假设。
