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Heart period variability and respiratory changes associated with physical and mental load: non-linear analysis

机译:与生理和心理负荷相关的心周期变异性和呼吸变化:非线性分析

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摘要

In the investigation of heart rate and heart rate variability, the discrimination between mental workload, physical activity and respiration is known to be methodologically difficult. At most, heart rate variability measures are more likely to be coarse-grained measures with variability confounded by heart rate. Moreover, the spectral analysis of heart rate variability shows broad-band Frequency characteristics, pointing towards non-stationarity or non-linearity.
机译:在调查心率和心率变异性时,已知在工作量,身体活动和呼吸之间的区别在方法上是困难的。至多,心率变异性度量更可能是粗粒度度量,而变异性会与心率混淆。此外,心率变异性的频谱分析显示出宽带频率特性,指向非平稳性或非线性。

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