使用多波长PPG测量压力诱导的交感神经活动
Radhagayathri Udhayakumar1, Saifur Rahman1, Dilpreet Buxi2
1School of Information Technology Deakin University, Geelong 3225, Australia.
Royal Society open science
|August 31, 2023
概括
来自光聚光显微镜 (PPG) 信号的非线性特征有效地检测压力期间的同情性兴奋 (SA). 在压力监测中,TotalSampEn在所有测试的波长中表现最好.
科学领域:
- 生理监测是指对身体进行生理监测.
- 生物医学信号处理
- 压力反应研究研究压力反应研究
背景情况:
- 压力会触发同情性兴奋 (SA),改变心率和血压等生理参数.
- 对心理障碍的客观量化对于管理心理障碍至关重要.
- 光电脉冲图 (PPG) 间接估计SA,但波长特定的影响未得到充分研究.
研究的目的:
- 调查使用各种PPG信号波长和特征来估计压力诱导的SA的可行性.
- 为了比较来自PPG信号的统计和非线性特征的性能,用于SA检测.
- 为压力监测确定最佳的PPG波长和特征.
主要方法:
- 收集了32个健康个体的PPG信号,这些个体处于身体压力 (例如,手握).
- 提取的线性 (平均值,s.d.) 和非线性 (Katz, Petrosian, Higuchi, SampEn, TotalSampEn) 的特征来自PPG AC幅度的绿色,蓝色,红外和红色波长.
- 分析了检测压力开始,持续和恢复阶段的功能性能.
主要成果:
- 在检测压力诱导的SA时,非线性特征比线性特征更有希望.
- TotalSampEn功能在所有测试的PPG波长中成功检测了压力诱导的SA变化.
- 对于红外和红波长,Petrozian和AvgSampEn的特征是显著的 (AUC ≥ 0.8).
结论:
- 非线性特征,特别是TotalSampEn,对于使用PPG信号来估计压力诱导的SA是有效的.
- 特定的波长 (红外线,红) 与某些非线性特征相结合,提供了强大的应力检测能力.
- 这些发现可以为用于压力检测和管理的设备和算法的设计提供信息.
相关概念视频
Sympathetic Activation
5.4K
The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
5.4K
Exercise Stress Test
271
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
271


