School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia.
Comput Biol Med. 2013 May;43(4):231-9. doi: 10.1016/j.compbiomed.2013.01.005. Epub 2013 Feb 9.
Breathing dynamics vary between infant sleep states, and are likely to exhibit non-linear behaviour. This study applied the non-linear analytical tool recurrence quantification analysis (RQA) to 400 breath interval periods of REM and N-REM sleep, and then using an overlapping moving window. The RQA variables were different between sleep states, with REM radius 150% greater than N-REM radius, and REM laminarity 79% greater than N-REM laminarity. RQA allowed the observation of temporal variations in non-linear breathing dynamics across a night's sleep at 30s resolution, and provides a basis for quantifying changes in complex breathing dynamics with physiology and pathology.
呼吸动力学在婴儿的睡眠状态之间存在差异，并且可能表现出非线性行为。本研究应用非线性分析工具递归定量分析（RQA）对 REM 和非 REM 睡眠的 400 个呼吸间隔周期进行分析，然后使用重叠移动窗口。RQA 变量在睡眠状态之间存在差异，REM 半径比 N-REM 半径大 150%，而 REM 层状度比 N-REM 层状度大 79%。RQA 允许以 30 秒的分辨率观察一整夜睡眠中非线性呼吸动力学的时间变化，并为定量分析生理和病理变化中的复杂呼吸动力学提供了基础。
