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Photoplethysmography

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Photoplethysmography

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Author : Panicos A. Kyriacou
language : en
Publisher: Academic Press
Release Date : 2021-11-03

Photoplethysmography written by Panicos A. Kyriacou and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-03 with Technology & Engineering categories.

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

Advances In Basic And Applied Research In Photoplethysmography

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Author : John Allen
language : en
Publisher: Frontiers Media SA
Release Date : 2024-05-21

Advances In Basic And Applied Research In Photoplethysmography written by John Allen and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-05-21 with Science categories.

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.

Studies In Skin Perfusion Dynamics

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Author : Vladimir Blazek
language : en
Publisher: Springer Nature
Release Date : 2021-01-20

Studies In Skin Perfusion Dynamics written by Vladimir Blazek and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-20 with Science categories.

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.

Studies In Skin Perfusion Dynamics

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Author : Vladimir Blazek
language : en
Publisher:
Release Date : 2021

Studies In Skin Perfusion Dynamics written by Vladimir Blazek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.

A Multi Channel Photoplethysmography Array With Contact Force Regulation For Tonoarteriographic Imaging

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Author : Zi-Jun Liu
language : en
Publisher: OAE Publishing Inc.
Release Date : 2024-02-19

A Multi Channel Photoplethysmography Array With Contact Force Regulation For Tonoarteriographic Imaging written by Zi-Jun Liu and has been published by OAE Publishing Inc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-19 with Medical categories.

Aim: Photoplethysmography (PPG) has gained widespread popularity as a non-invasive method for potential cuff-less blood pressure (BP) measurement in smart devices. However, the accuracy of PPG-based devices is often hindered by motion artifacts, site variability, and inconsistent contact force (CF). This study aims to investigate the influence of CF variations on PPG signals. Methods: To address these challenges, we present a novel approach involving a multi-channel PPG array integrated with CF regulation in the form of a wearable wristband. This platform enables the visualization of regional PPG/BP distribution while simultaneously monitoring CF. Moreover, our research explored the relationship between PPG waveform characteristics and CF during wrist extension. Results: The results of this study reveal that the PPG amplitude (PPGA) and the b/a ratios, computed from the second derivative peaks of the PPG AC pulse wave, exhibit inconsistency in reaction to CF variations. Notably, a shape correlation coefficient of 0.65069 between normalized PPG and flipped CF sheds light on how changes in posture affect PPG measurements. Conclusions: The proposed platform shows promise in mitigating the effects of CF and spatial positioning on PPG, thereby improving measurement precision and offering a novel approach to image tonoarteriographic (TAG) activities for continuous hypertension management.

Enhanced Biometric Identification Using Photoplethysmography Signals

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Author : Kim Ho Yeap
language : en
Publisher: Cambridge Scholars Publishing
Release Date : 2024-03-25

Enhanced Biometric Identification Using Photoplethysmography Signals written by Kim Ho Yeap and has been published by Cambridge Scholars Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-25 with Computers categories.

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.

Quantitative Photoplethysmography

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Author : Vladimír Blažek
language : en
Publisher:
Release Date : 1996

Quantitative Photoplethysmography written by Vladimír Blažek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.

Photoplethysmography

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Author : Joseph Lionel Higgins
language : en
Publisher:
Release Date : 1988

Photoplethysmography written by Joseph Lionel Higgins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.

Noninvasive Measurement Of The Endothelial System Activity Using Calibrated Photoplethysmography

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Author : Brian Patrick Watschke
language : en
Publisher:
Release Date : 2000

Noninvasive Measurement Of The Endothelial System Activity Using Calibrated Photoplethysmography written by Brian Patrick Watschke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

4th Kuala Lumpur International Conference On Biomedical Engineering 2008

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Author : Noor Azuan Abu Osman
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-07-30

4th Kuala Lumpur International Conference On Biomedical Engineering 2008 written by Noor Azuan Abu Osman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-07-30 with Technology & Engineering categories.

It is with great pleasure that we present to you a collection of over 200 high quality technical papers from more than 10 countries that were presented at the Biomed 2008. The papers cover almost every aspect of Biomedical Engineering, from artificial intelligence to biomechanics, from medical informatics to tissue engineering. They also come from almost all parts of the globe, from America to Europe, from the Middle East to the Asia-Pacific. This set of papers presents to you the current research work being carried out in various disciplines of Biomedical En- neering, including new and innovative researches in emerging areas. As the organizers of Biomed 2008, we are very proud to be able to come-up with this publication. We owe the success to many individuals who worked very hard to achieve this: members of the Technical Committee, the Editors, and the Inter- tional Advisory Committee. We would like to take this opportunity to record our thanks and appreciation to each and every one of them. We are pretty sure that you will find many of the papers illuminating and useful for your own research and study. We hope that you will enjoy yourselves going through them as much as we had enjoyed compiling them into the proceedings. Assoc. Prof. Dr. Noor Azuan Abu Osman Chairperson, Organising Committee, Biomed 2008

Photoplethysmography

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