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Photoplethysmography

2021-11-03 Technology & Engineering
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Release : 2021-11-03
Genre : Technology & Engineering
Kind : eBook
Book Rating : 25X/5 ( reviews)

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Book Synopsis Photoplethysmography by : Panicos A. Kyriacou

Download or read book Photoplethysmography written by Panicos A. Kyriacou. This book was released on 2021-11-03. Available in PDF, EPUB and Kindle. Book excerpt: Photoplethysmography: Technology, Signal Analysis, and Applications is the first comprehensive volume on the theory, principles, and technology (sensors and electronics) of photoplethysmography (PPG). It provides a detailed description of the current state-of-the-art technologies/optical components enabling the extreme miniaturization of such sensors, as well as comprehensive coverage of PPG signal analysis techniques including machine learning and artificial intelligence. The book also outlines the huge range of PPG applications in healthcare, with a strong focus on the contribution of PPG in wearable sensors and PPG for cardiovascular assessment. Presents the underlying principles and technology surrounding PPG Includes applications for healthcare and wellbeing Focuses on PPG in wearable sensors and devices Presents advanced signal analysis techniques Includes cutting-edge research, applications and future directions

Photoplethysmography

2021-11-17 Technology & Engineering
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Release : 2021-11-17
Genre : Technology & Engineering
Kind : eBook
Book Rating : 745/5 ( reviews)

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Book Synopsis Photoplethysmography by : Panicos A. Kyriacou

Download or read book Photoplethysmography written by Panicos A. Kyriacou. This book was released on 2021-11-17. Available in PDF, EPUB and Kindle. Book excerpt: IFC -- Half title -- Title -- Copyright -- Contents -- Contributors -- Preface -- Foreword -- Chapter 1 Introduction to photoplethysmography -- 1.1 Principle of photoplethysmography -- 1.2 History of photoplethysmography -- 1.3 Chapter overview -- References -- Chapter 2 The origin of photoplethysmography -- 2.1 Introduction -- 2.2 PPG basic working principle -- 2.3 Theoretical background -- 2.3.1 The generic Beer-Lambert law -- 2.3.2 The modified Beer-Lambert law -- 2.3.3 The Beer-Lambert law with multiple absorbers -- 2.3.4 The Beer-Lambert law in PPG -- 2.3.5 The Beer-Lambert law in pulse oximetry -- 2.4 The origin of the photoplethysmogram -- 2.4.1 Different hypotheses relating to the origin of the PPG signal -- 2.4.2 Light-tissue interactions in photoplethysmography -- 2.4.3 Optical path and penetration depth analysis -- 2.4.4 Optical absorbance analysis -- 2.5 Conclusion -- References -- Chapter 3 Photoplethysmography technology -- 3.1 Introduction -- 3.2 Single Wavelength Instrumentation -- 3.2.1 Optical components -- 3.2.2 Emitter driver -- 3.2.3 Transimpedance amplifier -- 3.2.4 Signal conditioning -- 3.2.5 Analog-to-digital conversion -- 3.3 Multiwavelength instrumentation -- 3.3.1 Multi-wavelength emitter drivers -- 3.3.2 TIA -- 3.3.3 Sample-and-hold amplifier -- 3.4 Future trends -- References -- Chapter 4 Photoplethysmography signal processing and synthesis -- 4.1 Introduction -- 4.2 The Photoplethysmogram Signal -- 4.2.1 Physiological origins -- 4.2.2 Presentation of the photoplethysmogram signal -- 4.2.3 Signal acquisition -- 4.3 Photoplethysmogram Signal Processing -- 4.3.1 Preprocessing -- 4.3.2 Time domain analysis -- 4.3.3 Frequency domain analysis -- 4.3.4 Machine learning -- 4.3.5 Nonlinear analysis in phase space -- 4.3.6 Estimating physiological parameters -- 4.4 Photoplethysmogram Signal Synthesis.

Advances in Basic and Applied Research in Photoplethysmography

2024-05-21 Science
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Release : 2024-05-21
Genre : Science
Kind : eBook
Book Rating : 091/5 ( reviews)

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Book Synopsis Advances in Basic and Applied Research in Photoplethysmography by : John Allen

Download or read book Advances in Basic and Applied Research in Photoplethysmography written by John Allen . This book was released on 2024-05-21. Available in PDF, EPUB and Kindle. Book excerpt: Photoplethysmography (PPG) is a non-invasive optical technique widely used in the study and monitoring of the pulsations associated with changes in blood volume in a peripheral vascular bed. Over the last thirty years, there has been a significant increase in the number of published articles on PPG, describing both basic and applied research. Throughout these publications the PPG has been hailed as a non-invasive, low cost, and simple optical measurement technique applied at the surface of the skin to measure a whole host of physiological parameters.

Enhanced Biometric Identification Using Photoplethysmography Signals

2024-03-25 Computers
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Release : 2024-03-25
Genre : Computers
Kind : eBook
Book Rating : 428/5 ( reviews)

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Book Synopsis Enhanced Biometric Identification Using Photoplethysmography Signals by : Kim Ho Yeap

Download or read book Enhanced Biometric Identification Using Photoplethysmography Signals written by Kim Ho Yeap. This book was released on 2024-03-25. Available in PDF, EPUB and Kindle. Book excerpt: In an era where ensuring security is of utmost importance, biometric identification emerges as a fundamental aspect, capitalizing on unique biological signals that are impossible to replicate. This groundbreaking study introduces an innovative approach to authentication by harnessing photoplethysmographic (PPG) signals, which are renowned for their accessibility and cost-effectiveness. Delve into a realm where optical sensors extract PPG signals, unveiling their potential as inherently distinctive biometric traits. By drawing insights from biometric datasets of 40 subjects, this book meticulously demonstrates the effectiveness of PPG signals under controlled conditions. More than ten thousand feature sets are analyzed, revealing the superiority of the Support Vector Machine (SVM) model with an exceptional accuracy rate of 99.46%. This publication reveals the culmination of a project that revolutionizes biometric personal identification, with a specific focus on critical sectors such as banking, military, and information technology.

Studies in Skin Perfusion Dynamics

2021-01-20 Science
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Release : 2021-01-20
Genre : Science
Kind : eBook
Book Rating : 498/5 ( reviews)

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Book Synopsis Studies in Skin Perfusion Dynamics by : Vladimir Blazek

Download or read book Studies in Skin Perfusion Dynamics written by Vladimir Blazek. This book was released on 2021-01-20. Available in PDF, EPUB and Kindle. Book excerpt: This book talks about photoplethysmography (PPG) techniques based on computer-aided data processing. In particular, it presents the results of a co-operative Indo-German project on the topic between Indian Institute of Technology at Chennai and RWTH Aachen University. Measuring system design, experimental details and some preliminary results obtained so far within the framework of this project are presented here. From the investigations carried out so far using the PPG sensors in conjunction with breathing sensors, it has been possible to monitor the 0.125 to 0.15 Hz rhythms in the arterial volumetric changes and to study the influence of breathing on them. These rhythms, which according to medical experts have relevance to psychosomatic conditions e.g. stress or relaxation, can also be addressed to by ancient Indian practices like yoga and meditation. This book presents the results of studying the effects of Indian relaxation techniques like pranayama, meditation, etc. in comparison to western relaxation techniques like autogenic training. So far it has been established that the Indian techniques of relaxation like yoga and meditation are very effective in generating low frequency rhythms in the skin perfusion as monitored by optical sensors. According to medical experts, these low frequency rhythms have a very important bearing on the human physiology and have potential therapeutic implications. This book is meant to provide an overview of the current state-of-knowledge and encourage the next generation of scientists/engineers to carry this work forward, especially on the novel PPG application fields that are of growing importance like pain and stress assessment, detection of peripheral venous saturation and local arterio-venous oxygen consumption as well as contactless space resolved skin perfusion studies with modern camera based PPG technology.

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