Stress is a dynamic process that reflects the responses of the brain. Traditional methods for measuring stress are often time-consuming and susceptible to recall bias. To address this, we investigated changes in heart rate (HR) during the Trier Social Stress Test (TSST). Our study incorporated varying levels of complexity in mental arithmetic problems. Participants' HR increased during the Mental Arithmetic Task phase compared to baseline and resting stages, indicating that stress is reflected in HR.

翻译：压力是一个动态过程，反映大脑的反应。传统的压力测量方法通常耗时且易受回忆偏差影响。为此，我们研究了特里尔社会应激测试（TSST）中心率（HR）的变化。我们的研究包含了不同复杂程度的心算任务。与基线和休息阶段相比，参与者在心算任务阶段的心率有所增加，表明压力反映在心率变化中。