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相关概念视频

Pulse rhythm01:30

Pulse rhythm

1.5K
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
1.5K
Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

7.1K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
7.1K
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

1.0K
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
1.0K
Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

13.9K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
13.9K
Regulation of Heart Rates01:31

Regulation of Heart Rates

4.4K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
4.4K
Assessment of radial pulse01:11

Assessment of radial pulse

1.7K
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
1.7K

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相关实验视频

Updated: Mar 10, 2026

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
08:22

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis

Published on: April 26, 2024

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使用心跳概率进行可靠的远程心率估计的HBP-net.

Xiaolang Ye1,2, Caiying Zhou2, Yuanwang Wei1,3,4,5,6

  • 1Provincial Key Laboratory of Multimodal Perceiving and Intelligent Systems, Jiaxing University, Jiaxing, Zhejiang 314001, China.

iScience
|March 9, 2026
PubMed
概括

这项研究介绍了HBP-Net,用于使用远程光电脉学 (rPPG) 进行强大的非接触式心率监测. 新方法直接从视频中检测心跳,在运动和照明变化期间提高准确性.

关键词:
卫生科学 卫生科学

更多相关视频

Semi-automated Optical Heartbeat Analysis of Small Hearts
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Semi-automated Optical Heartbeat Analysis of Small Hearts

Published on: September 16, 2009

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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions

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相关实验视频

Last Updated: Mar 10, 2026

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
08:22

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis

Published on: April 26, 2024

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Semi-automated Optical Heartbeat Analysis of Small Hearts
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Semi-automated Optical Heartbeat Analysis of Small Hearts

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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
08:12

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions

Published on: June 5, 2019

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科学领域:

  • 生物医学工程 生物医学工程
  • 计算机视觉 计算机视觉
  • 生理监测 生理监测

背景情况:

  • 远程光电脉扫描 (rPPG) 提供无接触的心率监测.
  • 现有的rPPG方法对运动和照明不一致性敏感.
  • 目前的方法通常需要复杂的血液体积脉冲信号重建.

研究的目的:

  • 开发一种更强大的rPPG方法,适应运动和照明变化.
  • 通过专注于心跳检测来简化心率估计过程.
  • 改进基于摄像头的生命体征监测在现实应用中的可行性.

主要方法:

  • 开发了HBP-Net,一种新的方法,将rPPG重新定义为心跳检测问题.
  • 利用时空注意力架构从面部视频直接预测心跳概率.
  • 在多个数据集上评估性能,包括为运动挑战设计的新基准.

主要成果:

  • 在静态条件下,HBP-Net实现了具有竞争力的准确性.
  • 该方法证明了随着运动的增加而保持的性能.
  • 这种方法绕过了全血量脉冲信号重建的需要,减少了计算复杂性.

结论:

  • 在概念上,HBP-Net为rPPG提供了一个更简单,更有弹性的框架.
  • 概率事件检测方法提高了对现实世界环境变化的稳定性.
  • 这一进步支持可靠的基于摄像头的生命体征监测在远程医疗,健身和患者评估.