Mishra Varun, Pope Gunnar, Lord Sarah, Lewia Stephanie, Lowens Byron, Caine Kelly, Sen Sougata, Halter Ryan, Kotz David
Dartmouth College.
University of Massachusetts Amherst.
ACM Trans Comput Healthc. 2020 Apr;1(2). doi: 10.1145/3361562.
Timely detection of an individual's stress level has the potential to improve stress management, thereby reducing the risk of adverse health consequences that may arise due to mismanagement of stress. Recent advances in wearable sensing have resulted in multiple approaches to detect and monitor stress with varying levels of accuracy. The most accurate methods, however, rely on clinical-grade sensors to measure physiological signals; they are often bulky, custom made, and expensive, hence limiting their adoption by researchers and the general public. In this article, we explore the viability of commercially available off-the-shelf sensors for stress monitoring. The idea is to be able to use cheap, nonclinical sensors to capture physiological signals and make inferences about the wearer's stress level based on that data. We describe a system involving a popular off-the-shelf heart rate monitor, the Polar H7; we evaluated our system with 26 participants in both a controlled lab setting with three well-validated stress-inducing stimuli and in free-living field conditions. Our analysis shows that using the off-the-shelf sensor alone, we were able to detect stressful events with an 1-score of up to 0.87 in the lab and 0.66 in the field, on par with clinical-grade sensors.
及时检测个人的压力水平有助于改善压力管理，从而降低因压力管理不善可能产生的不良健康后果的风险。可穿戴传感技术的最新进展带来了多种检测和监测压力的方法，其准确性各不相同。然而，最准确的方法依赖于临床级传感器来测量生理信号；它们通常体积庞大、定制且昂贵，因此限制了研究人员和普通大众对其的采用。在本文中，我们探讨了商用现成传感器用于压力监测的可行性。其理念是能够使用廉价的非临床传感器来捕捉生理信号，并基于该数据推断佩戴者的压力水平。我们描述了一个涉及一款流行的现成心率监测器——博能H7的系统；我们在一个有三种经过充分验证的压力诱导刺激的受控实验室环境以及自由生活的野外条件下，对26名参与者的系统进行了评估。我们的分析表明，仅使用现成传感器，我们在实验室中能够以高达0.87的I分数检测到压力事件，在野外为0.66，与临床级传感器相当。
