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Acute Mental Stress Detection via Ultra-short term HRV Analysis

机译：通过超短短期HRV分析急性精神应激检测

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摘要

Acute mental stress reduces working performances and is one of the first causes of cognitive dysfunctions, cardiovascular disorders and depression. Stress detection via short term (5 minutes) Heart Rate Variability (HRV) has been widely investigated in the last years. Recent improvements in wearable sensing devices and mobile computing raised a new research question: is ultra-short (2 minutes) HRV as effective as the short term one to detect mental stress? This study aimed to answer this research question. Short and ultra-short HRV was compared in 42 healthy subjects (age 25-38 years) undertaking the widely adopted and highly-effective the Stroop Color Word Test (CWT). ECG signals were recorded during rest and stress session using a chest wearable monitoring device, the BioHarness M3 (ZephyrTech, NZ). HRV measures were then extracted and analyzed according to the literature and using validated software tools. Variations between short and ultra-short HRV measures in rest and stress sessions were analysed with the statistical Wilcoxon significance test. The results of the current study suggested that 6 HRV measures are effective in detecting acute mental stress both using short and ultra-short term analysis: Mean RR, Low Frequency power, Sample Entropy, Detrended fluctuation analysis: Short term and Long term fluctuation slope and Mean line length of Recurrence plot analysis.
机译：急性精神胁迫减少了工作性能，是认知功能障碍，心血管障碍和抑郁症的首批原因之一。通过短期（5分钟）心率变异（HRV）的应力检测已在过去几年中得到了广泛研究。最近的可穿戴式传感装置和移动计算的改进提出了一种新的研究问题：超短（2分钟）HRV与短期术语有效，以检测精神压力？本研究旨在回答这一研究问题。在42个健康的科目（25-38岁）中进行了短期和超短的HRV，在进行广泛采用和高度有效的Troop颜色词测试（CWT）。在休息和压力会话期间使用胸部可穿戴监测装置，生物乳头肉M3（Zephyrtech，NZ）记录ECG信号。然后根据文献提取和分析HRV措施并使用验证的软件工具进行分析。通过统计WILCOXON意义测试分析了静止和应力会话的短和超短HRV测量之间的变化。目前的研究结果表明，6个HRV测量有效地使用短和超短期分析检测急性精神胁迫：平均RR，低频功率，样品熵，减少波动分析：短期和长期波动斜率复发绘图分析的平均线长度。

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