Autonomic nervous system

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The autonomic nervous system (ANS or visceral nervous system) is the part of the peripheral nervous system that acts as a control system functioning largely below the level of consciousness, and controls visceral functions. (Wikipedia.org)






Conferences related to Autonomic nervous system

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2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE International Conference on Systems, Man and Cybernetics (SMC)

2019 IEEE International Conference on Systems, Man, and Cybernetics (SMC2019) will be held in the south of Europe in Bari, one of the most beautiful and historical cities in Italy. The Bari region’s nickname is “Little California” for its nice weather and Bari's cuisine is one of Italian most traditional , based of local seafood and olive oil. SMC2019 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report up-to-the-minute innovations and developments, summarize state­of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems and cybernetics. Advances have importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience, and thereby improve quality of life.


2019 IEEE SENSORS

The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state-of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors.

  • 2018 IEEE SENSORS

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state -of-the art information including the latest research and development in sensors and their relatedfields. It brings together researchers, developers, and practitioners from diverse fields includinginternational scientists and engineers from academia, research institutes, and companies topresent and discuss the latest results in the general field of sensors.

  • 2017 IEEE SENSORS

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state -of-the art information including the latest research and development in sensors and their relatedfields. It brings together researchers, developers, and practitioners from diverse fields includinginternational scientists and engineers from academia, research institutes, and companies topresent and discuss the latest results in the general field of sensors.

  • 2016 IEEE Sensors

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state -of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors.

  • 2015 IEEE Sensors

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state -of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fieldsincluding international scientists and engineers from academia, research institutes, and companies topresent and discuss the latest results in the general field of sensors.

  • 2014 IEEE Sensors

    The IEEE Sensors Conference is a forum for presentation, discussion, andexchange of state -of-the art information including the latest research and development in sensors andtheir related fields. It brings together researchers, developers, and practitioners from diverse fieldsincluding international scientists and engineers from academia, research institutes, and companies topresent and discuss the latest results in the general field of sensors.

  • 2013 IEEE Sensors

    The IEEE SENSORS Conference is a forum for presentation, discussion, and exchange of state -of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors.

  • 2012 IEEE Sensors

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state-of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors.

  • 2011 IEEE Sensors

    The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state-of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors. IEEE SENSORS 2011 will include keynote addresses by eminen

  • 2010 IEEE Sensors

    The IEEE SENSORS 2010 Conference is a forum for state-of-the-art presentations on sensors and related topics covering from theory to application, device to system, modeling to implementation and from macro/nano to scale.

  • 2009 IEEE Sensors

    IEEE Sensors Conference 2009 is intended to provide a common forum for researchers, scientists, engineers and practitioners throughout the world to present their latest research findings, ideas, developments and applications in the area of sensors and sensing technology. IEEE Sensors Conference 2009 will include keynote addresses by eminent scientists as well as special, regular and poster sessions.

  • 2008 IEEE Sensors

    IEEE SENSORS 2008 solicits original and state-of-the-art contributions to sensors and related topics, covering from theory to application, from device to system, from modeling to implementation, and from macro to micro/nano in scale. Topics of interest include,but are not limitid to: Phenomena, Modeling, and Evaluation (Novel Sensing Principles, Theory and Modeling, Sensors Characterization, Evaluation and Testing, Data Handling and Mining) Chemical and Gas Sensors (Materials, Devices, Electronics N

  • 2007 IEEE Sensors

    IEEE SENSORS 2007 solicits original and state-of-the-art contributions to sensors and related topics, covering from theory to application, from device to system, from modeling to implementation, and from macro to micro/nano in scale.

  • 2006 IEEE Sensors

  • 2005 IEEE Sensors

  • 2004 IEEE Sensors

  • 2003 IEEE Sensors

  • 2002 IEEE Sensors


2019 IEEE/SICE International Symposium on System Integration (SII)

IEEE/SICE SII is the premier symposium series presenting the state of the art and future perspectives of System integration, where industry experts, researchers, and academics share ideas and experiences surrounding frontier technologies, breakthrough and innovative solutions and applications.

  • 2017 IEEE/SICE International Symposium on System Integration (SII)

    System Integration,Control technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform, Artifacts, Mechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems,Human and Society, Welfare/Environment / Ecological systems, Bio systems, Rescue/Security/Enterprise resource planning systems, Supply chain management/Intelligent transportation/Logistics systems, Human, Aging society, Health engineering, Assistive Technologies, Large-scale system simulation, Software/Networking systems, Decision making, Human-Robot cooperation/interaction

  • 2016 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems3. Human and SocietyWelfare systems, Environment/Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision making systems

  • 2015 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but nou limited to 1. System Integration Control technology, Robotics technology, Network system control, Plant engineerint, System hardware, System Software Integration platform, ... 2. Artifacts Mechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems, ... 3. Human and Society Welfare systems, Environment/Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering... 4. Assistive Technologies Large-scale system simulation, Software systems, Networking systems, Decision making systems, ...

  • 2014 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, Systemhardware, System software, Integration platform,...2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems,Micro-nano systems, ...3. Human and SocietyWelfare systems, Environment / Ecological systems, Bio systems, Rescue systems, Securitysystems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering...4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision makingsystems, ...

  • 2013 IEEE/SICE International Symposium on System Integration (SII)

    The topics of this symposium include, but not limited to 1. System IntegrationControl technology, Robotics technology, Network system control, Plant engineering, System hardware, System software, Integration platform,...2. ArtifactsMechatronics systems, Automation systems, Virtual reality systems, Entertainment systems, Micro-nano systems, ... 3. Human and SocietyWelfare systems, Environment / Ecological systems, Bio systems, Rescue systems, Security systems, Enterprise resource planning systems, Supply chain management systems, Intelligent transportation systems, Logistics systems, Human, Aging Society, Health engineering... 4. Assistive TechnologiesLarge-scale system simulation, Software systems, Networking systems, Decision making systems, ...

  • 2012 IEEE/SICE International Symposium on System Integration (SII 2012)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems. This conference focuses to the new research and industrial application of system integration, and discusses the approach method to improve effectiveness of system integration.

  • 2011 IEEE/SICE International Symposium on System Integration (SII 2011)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in new century. This conference focuses to the new research and industrial application of system integration, and discusses the approach method to improve effectiveness of system integration.

  • 2010 IEEE/SICE International Symposium on System Integration (SII 2010)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in the new century. The symposium focuses on new researches and industrial applications of system integration.

  • 2009 IEEE/SICE International Symposium on System Integration (SII 2009)

    System integration is one of the key technologies and the integration of hardware and software is especially important to solve the industrial or social system problems in the new century. The symposium focuses on new researches and industrial applications of system integration.

  • 2008 IEEE/SICE International Symposium on System Integration (SI International 2008)

    System integration is an important key issue in the recent trend of technology which gives objective-oriented solutions to vairous problems. The symposium focuses on principles and practices of future system integration on the basis of fact cases.


2018 26th Signal Processing and Communications Applications Conference (SIU)

The general scope of the conference ranges from signal and image processing to telecommunication, and applications of signal processing methods in biomedical and communication problems.

  • 2017 25th Signal Processing and Communications Applications Conference (SIU)

    Signal Processing and Communication Applications (SIU) conference is the most prominent scientific meeting on signal processing in Turkey bringing together researchers working in signal processing and communication fields. Topics include but are not limited to the areas of research listed in the keywords.

  • 2016 24th Signal Processing and Communication Application Conference (SIU)

    Signal Processing Theory, Statistical Signal Processing, Nonlinear Signal Processing, Adaptive Signal Processing, Array and Multichannel Signal Processing, Signal Processing for Sensor Networks, Time-Frequency Analysis, Speech / Voice Processing and Recognition, Computer Vision, Pattern Recognition, Machine Learning for Signal Processing, Human-Machine Interaction, Brain-Computer Interaction, Signal-Image Acquisition and Generation, image Processing, video Processing, Image Printing and Presentation, Image / Video / Audio browsing and retrieval, Image / Video / Audio Watermarking, Multimedia Signal Processing, Biomedical Signal Processing and Image Processing, Bioinformatics, Biometric Signal-Image Processing and Recognition, Signal Processing for Security and Defense, Signal and Image Processing for Remote Sensing, Signal Processing Hardware, Signal Processing Education, Radar Signal Processing, Communication Theory, Communication Networks, Wireless Communications

  • 2015 23th Signal Processing and Communications Applications Conference (SIU)

    Signal Processing Theory Statistical Signal Processing Nonlinear Signal Processing Adaptive Signal Processing Array and Multichannel Signal Processing Signal Processing for Sensor Networks Time-Frequency Analysis Speech / Voice Processing and Recognition Computer Vision Pattern Recognition Machine Learning for Signal Processing Human-Machine Interaction Brain-Computer Interaction Signal-Image Acquisition and Generation image Processing video Processing Image Printing and Presentation Image / Video / Audio browsing and retrieval Image / Video / Audio Watermarking Multimedia Signal Processing Biomedical Signal Processing and Image Processing Bioinformatics Biometric Signal-Image Processing and Recognition Signal Processing for Security and Defense Signal and Image Processing for Remote Sensing Signal Processing Hardware Signal Processing Education Radar Signal Processing Communication Theory Communication Networks Wireless Communications

  • 2014 22nd Signal Processing and Communications Applications Conference (SIU)

    SIU will be held in Trabzon, Turkey at the Karadeniz Technical University Convention and Exhibition Centre on April 23, 2014. SIU is the largest and most comprehensive technical conference focused on signal processing and its applications in Turkey. Last year there were 500 hundred participants. The conference will feature renowned speakers, tutorials, and thematic workshops. Topics include but are not limited to: Signal Procesing, Image Processing, Communication, Computer Vision, Machine Learning, Biomedical Signal Processing,

  • 2013 21st Signal Processing and Communications Applications Conference (SIU)

    Conference will discuss state of the art solutions and research results on existing and future DSP and telecommunication systems, applications, and related standardization activities. Conference will also include invited lectures, tutorials and special sessions.

  • 2012 20th Signal Processing and Communications Applications Conference (SIU)

    Conference will discuss state of the art solutions and research results on existing and future DSP and telecommunication systems, applications, and related standardization activities. Conference will also include invited lectures, tutorials and special sessions.

  • 2011 19th Signal Processing and Communications Applications Conference (SIU)

    Conference will bring together academia and industry professionals as well as students and researchers to present and discuss state of the art solutions and research results on existing and future DSP and telecommunication systems, applications, and related standardization activities. The Conference will also include invited lectures, tutorials and special sessions.

  • 2010 IEEE 18th Signal Processing and Communications Applications Conference (SIU)

    S1.Theory of Signal-Processing S2.Statistical Signal-Processing S3.Multimedia Signal-Processing S4.Biomedical Signal-Processing S5.Sensor Networks S6.Multirate Signal-Processing S7.Pattern Recognition S8.Computer Vision S9.Adaptive Filters S10.Image/Video/Speech Browsing, Retrieval S11.Speech/Audio Coding S12.Speech Processing S13.Human-Machine Interfaces S14.Surveillance Signal Processing S15.Bioinformatics S16.Self-Learning S17.Signal-Processing Education S18.Signal-Processing Systems S1

  • 2009 IEEE 17th Signal Processing and Communications Applications Conference (SIU)

    The scope of the conference is to cover recent topics in theory and applications of Signal Processing and Communications.

  • 2008 IEEE 16th Signal Processing and Communications Applications Conference (SIU)

    Signal Processing, Image Processing, Speech Processing, Pattern Recognition, Human Computer Interaction, Communication, Video and Speech indexing, Computer Vision, Biomedical Signal Processing

  • 2007 IEEE 15th Signal Processing and Communications Applications (SIU)

  • 2006 IEEE 14th Signal Processing and Communications Applications (SIU)

  • 2005 IEEE 13th Signal Processing and Communications Applications (SIU)

  • 2004 IEEE 12th Signal Processing and Communications Applications (SIU)


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Periodicals related to Autonomic nervous system

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Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Engineering in Medicine and Biology Magazine, IEEE

Both general and technical articles on current technologies and methods used in biomedical and clinical engineering; societal implications of medical technologies; current news items; book reviews; patent descriptions; and correspondence. Special interest departments, students, law, clinical engineering, ethics, new products, society news, historical features and government.


Fuzzy Systems, IEEE Transactions on

Theory and application of fuzzy systems with emphasis on engineering systems and scientific applications. (6) (IEEE Guide for Authors) Representative applications areas include:fuzzy estimation, prediction and control; approximate reasoning; intelligent systems design; machine learning; image processing and machine vision;pattern recognition, fuzzy neurocomputing; electronic and photonic implementation; medical computing applications; robotics and motion control; constraint propagation and optimization; civil, chemical and ...


Information Technology in Biomedicine, IEEE Transactions on

Telemedicine, teleradiology, telepathology, telemonitoring, telediagnostics, 3D animations in health care, health information networks, clinical information systems, virtual reality applications in medicine, broadband technologies, and global information infrastructure design for health care.


Instrumentation & Measurement Magazine, IEEE

Applications-oriented material in the field of instrumentation and measurement.


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Most published Xplore authors for Autonomic nervous system

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Xplore Articles related to Autonomic nervous system

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A Novel PBPK/PD Model with Automatic Nervous System in Anesthesia

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2006

In terms of the characteristic of anesthetic operation, this paper propose new physiologically based pharmacokinetics/ pharmacodynamics (PBPK/PD) model that focus on the important role of autonomic nervous system (ANS) more. Automatic nervous system that is divided into the sympathetic nervous system and the parasympathetic nervous system, at the same time, is the important target of drug effect in anesthesia. Consequently, ...


Non-linear Analysis of Cardiac Autonomic Nervous Activity using Principal Dynamic Fluctuation Analysis

2005 Annual IEEE India Conference - Indicon, 2005

Heart Rate Variability (HRV) is a marker of sympathovagal balance of Autonomous Nervous System (ANS). The homeostasis of the cardiovascular system is properly maintained by the efficient interaction of parasympathetic and sympathetic nervous systems. The efficiency of such interactions is understood from the computations of the ratio of the sympathetic to parasympathetic spectral powers. This paper introduces a modified Principal ...


Evaluation of mental workload by fluctuation analysis of pupil area

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286), 1998

It is generally known that the pupil is regulated by the autonomic nervous system. In this study, an attempt was made to assess mental workload on the basis of fluctuation rhythm of pupil area. Controlling the respiration interval, the pupil area during mental tasking was measured for 1 min. The respiration curve was measured simultaneously to monitor the respiration interval. ...


Heartscope: a software tool addressing autonomic nervous system regulat

Computers in Cardiology, 2005, 2005

The evaluation of cardiovascular control system requires ad-hoc software tools specifically designed to address the complexity of the regulation mechanisms in a multiparametric and multidisciplinary perspective. We introduce HeartScope a Windows-based C++ tool that brings together the most advanced signal processing methods for the analysis of cardiovascular regulation in a flexible and friendly framework


Storage of sparse-coded hetero-associations with the competitive synaptic growth network

[Proceedings 1992] IJCNN International Joint Conference on Neural Networks, 1992

The authors apply the competitive synaptic growth network (SGN) to the storage and recall of sparse coded binary heteroassociations. The SGN is a two-layer, feedforward neural network utilizing complex neurons having finite extent and active dendritic structures. The performance measure for the SGN is the number of connections needed to store noiseless sparse coded heteroassociations and perfectly recall these associations ...


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Educational Resources on Autonomic nervous system

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IEEE-USA E-Books

  • A Novel PBPK/PD Model with Automatic Nervous System in Anesthesia

    In terms of the characteristic of anesthetic operation, this paper propose new physiologically based pharmacokinetics/ pharmacodynamics (PBPK/PD) model that focus on the important role of autonomic nervous system (ANS) more. Automatic nervous system that is divided into the sympathetic nervous system and the parasympathetic nervous system, at the same time, is the important target of drug effect in anesthesia. Consequently, not only does the action levels of automatic nervous system indicator the anesthesia state, but feed back altering the physiological state parameters of pharmacokinetics, which being one crucial reason of time-variant and nonlinear drug effect. However, the recent PBPK modeling and simulation strategy only estimate specific absorption, distribution, metabolism and excretion (ADME) parameters but consider no modulation result of automatic nervous system any longer. So far, in order to avoid over-interpreted data from mathematical models and to take more consideration of clinical significance, the PBPK/PD model with automatic nervous system presented is helpful to make clearer relationship between PK and PD, that between sophisticated of model and real physiological phenomenon in anesthesia than before

  • Non-linear Analysis of Cardiac Autonomic Nervous Activity using Principal Dynamic Fluctuation Analysis

    Heart Rate Variability (HRV) is a marker of sympathovagal balance of Autonomous Nervous System (ANS). The homeostasis of the cardiovascular system is properly maintained by the efficient interaction of parasympathetic and sympathetic nervous systems. The efficiency of such interactions is understood from the computations of the ratio of the sympathetic to parasympathetic spectral powers. This paper introduces a modified Principal Dynamic fluctuation analysis (PDFA) using a non-linear kernel trick to estimate the dynamics of cardiac autonomic nervous systems activity from the heart rate variability. It is found that the wide range of beating ratio has better sympathovagal balance. A large LF/HF ratio suggests predominantly vagal conrol. Comparison of this method to the conventional linear methods shows PDFA provide more accurate assessment of the sympathovagal balance. We obtained consistent results in all of our signals, comprising of seven sudden death cardiac signals and five normal sinus rhythm signals.

  • Evaluation of mental workload by fluctuation analysis of pupil area

    It is generally known that the pupil is regulated by the autonomic nervous system. In this study, an attempt was made to assess mental workload on the basis of fluctuation rhythm of pupil area. Controlling the respiration interval, the pupil area during mental tasking was measured for 1 min. The respiration curve was measured simultaneously to monitor the respiration interval. Two mental tasks were used. One was a division task, the work level of which was set to two, three, four and five number of digits of the dividend. The other was a Sternberg memory search task, which had four work levels defined by the number of memory set. In the Sternberg memory search, the number of memory sets changed from five to eight. In such a way, the mental workload induced by mental loading was changed. As a result of calculating an AR power spectrum, we could observe two peaks which corresponded to the blood pressure variation and respiratory sinus arrhythmia under a low workload condition. With increasing workload, the spectral peak related to the respiratory sinus arrhythmia disappeared. The ratio of the power at the low frequency band (from 0.05-0.15 Hz) to the power at the respiration frequency band (from 0.35-0.4 Hz) increased with work level. In conclusion, the fluctuation of the pupil area can be used as a promising means to evaluate mental workload or autonomic function to supplement well-used heart rate variability measures.

  • Heartscope: a software tool addressing autonomic nervous system regulat

    The evaluation of cardiovascular control system requires ad-hoc software tools specifically designed to address the complexity of the regulation mechanisms in a multiparametric and multidisciplinary perspective. We introduce HeartScope a Windows-based C++ tool that brings together the most advanced signal processing methods for the analysis of cardiovascular regulation in a flexible and friendly framework

  • Storage of sparse-coded hetero-associations with the competitive synaptic growth network

    The authors apply the competitive synaptic growth network (SGN) to the storage and recall of sparse coded binary heteroassociations. The SGN is a two-layer, feedforward neural network utilizing complex neurons having finite extent and active dendritic structures. The performance measure for the SGN is the number of connections needed to store noiseless sparse coded heteroassociations and perfectly recall these associations when given a (perhaps noisy) input vector. Using the same number of network connections, the SGN clearly outperforms the benchmark nonholographic associative memory applied to the same problem.<<ETX>>

  • Elements of construction of expert system of the analysis of heart-rate variability based on principles of nonlinear dynamics

    In this article a concept of nonlinear analysis of heart-rate variability that may improve the understanding of the underlying physiological processes of the autonomic nervous system is introduced.

  • The pupil as a possible monitor of the autonomic nervous system

    The pupil is innervated by the autonomic nervous activity. With the easiness of observation, it has been utilized as a possible monitor of the autonomic nervous system activity. In this paper, two possible methods for evaluating the sympathetic and the parasympathetic nervous activity are proposed. One of them is an improved version of the conventional method which has been developed and used by neuro-ophthalmologists to diagnose the autonomic nervous diseases. The other one employs the inverse dynamic model of the pupil muscle system. Validity of each method is confirmed by the drug experiment or comparison with directly measured autonomic nervous system activity to the pupil. Finally, the result of an application of the new method is described.

  • Comparison of fMRI BOLD Effect and Arterial Pulsation Harmonic Distribution among Different Breathing Rate

    The phenomenon of respiratory sinus arrhythmia (RSA) had been studied since 1733. Most researches were focused on the heart rates or blood pressure variability. It was well known that heart rate variability (HRV) induced by respiration decreased progressively with age. In general, it is caused by the function of the autonomic nervous system (ANS). Seldom researches studied the relationship of this phenomenon with cerebral circulation. In our previous research, we found that different breathing rate could redistribute the proportion of systemic circulation, and also observed that the slower the breathing rate the more proportion of cerebral circulation appeared on head. In this paper, we further examined the BOLD (Blood Oxygenation Level Dependent) signal fluctuations in brain stem among different breathing rate by the technique of functional magnetic resonance imaging (fMRI). We found that the BOLD signal changes were hinged on the breathing rate, and the variability was consistent with the pulsatile pressure study.

  • Control of artificial hearts using autonomic nervous signals

    In order to develop an artificial heart system capable of being controlled by autonomic nervous signals, we have studied the methods of long-term stable recording of autonomic nervous signals and algorithms to utilize those signals to control an artificial heart system optimally. In this study, we have focused on the feasibility of the control of an artificial heart using the signals recorded from the cardiac sympathetic nerve and other nerves through animal experiments.

  • Central and autonomic regulation of fetal heart rate: nonlinear analysis after vibroacoustic stimulation

    Vibroacoustic stimulation is able to produce a fetal sensory response, which is mediated by the Central Nervous System (CNS). Despite the fetal heart rate variability is basically regulated by Autonomic Nervous System (ANS), some changes in the FHR appear as a direct consequence of the sensory stimulation. The paper proposes an analysis of FHR of 13 normal subjects based on nonlinear approaches. Detrended Fluctuation Analysis (DFA), Approximate Entropy and Poincare plots are able to evidence differences that can be attributed to fetal nervous system activity. In particular DFA decreases after stimulation confirming a reduction in the longterm correlation properties of FHR. The parallel, marked increase of ApEn indicates a regularity loss after the sensory stimuli. Nonlinear indexes seem able to describe complex interactions of different neural mechanisms which control the FHR.



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