Origins Of The Resting State Fmri Signal
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Origins Of The Resting State Fmri Signal
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Author : Jean Chen
language : en
Publisher: Frontiers Media SA
Release Date : 2020-12-28
Origins Of The Resting State Fmri Signal written by Jean Chen 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 2020-12-28 with Science categories.
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Resting State Brain Activity Implications For Systems Neuroscience
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Author : Vinod Menon
language : en
Publisher: Frontiers E-books
Release Date :
Resting State Brain Activity Implications For Systems Neuroscience written by Vinod Menon and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Research on resting state brain activity using fMRI offers a novel approach for understanding brain organization at the systems level. Resting state fMRI examines spatial synchronization of intrinsic fluctuations in blood-oxygenation-level-dependent (BOLD) signals arising from neuronal and synaptic activity that is present in the absence of overt cognitive information processing. Since the discovery of coherent spontaneous fluctuations within the somatomotor system (Biswal, et al. 1995), a growing number of studies have shown that many of the brain areas engaged during various cognitive tasks also form coherent large-scale brain networks that can be readily identified using resting state fMRI. These studies are beginning to provide new insights into the functional architecture of the human brain. This Research Topic will synthesize current knowledge about resting state brain activity and discuss their implications for understanding brain function and dysfunction from a systems neuroscience perspective. This topic will also provide perspectives on important conceptual and methodological questions that the field needs to address in the next years. In addition to invited reviews and perspectives, we solicit research articles on theoretical, experimental and clinical questions related to the nature, origins and functions of resting state brain activity.
Advances In Resting State Functional Mri
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Author : Jean Chen
language : en
Publisher: Elsevier
Release Date : 2023-07-03
Advances In Resting State Functional Mri written by Jean Chen and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-03 with Psychology categories.
Advances in Resting-State Functional MRI: Methods, Interpretation, and Applications gives readers with basic neuroimaging experience an up-to-date and in-depth understanding of the methods, opportunities, and challenges in rs-fMRI. The book covers current knowledge gaps in rs-fMRI, including "what are biologically plausible brain networks," "how to tell what part is noise," "how to perform quality assurance on the data," "what are the spatial and temporal limits of our ability to resolve FC," and "how to best identify network features related to individual differences or disease state". This book is an ideal reference for neuroscientists, computational neuroscientists, psychologists, biomedical engineers, physicists and medical physicists. Both new and more advanced researchers alike will be able to discover new information distilled from the past decade of research to become well-versed in rs-fMRI-related topics. Presents the first book to explain the latest methods, opportunities and challenges of Resting-state Functional MRI Edited and authored by leading researchers in fMRI Includes neuroscientific and clinical applications
Functional Mri
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Author : Ramachandran Ramani
language : en
Publisher: Oxford University Press
Release Date : 2019-01-23
Functional Mri written by Ramachandran Ramani and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-23 with Medical categories.
Functional MRI: Basic Principles and Emerging Clinical Applications provides an overview of the basic principles of fMRI for clinicians with minimal knowledge of the imaging technique and its research potential and clinical applications. The text is divided into two parts, with Section I covering the primary signal measured in fMRI (BOLD), the correlation between neuronal activity and the BOLD signal, and how the data is analyzed and interpreted in fMRI. Section II explores applications of fMRI in cognitive neuroscience and common psychiatric disorders, surgical planning in neurosurgery, anesthesia and the intensive care unit, and more. Timely and highly accessible, this book is a valuable resource for researchers and clinicians interested in understanding what fMRI is, how it works, and its applications.
The Effects Of Physiological Factors And Head Motion On Resting State Fmri
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Author : Michalis Kassinopoulos
language : en
Publisher:
Release Date : 2020
The Effects Of Physiological Factors And Head Motion On Resting State Fmri written by Michalis Kassinopoulos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
"Functional magnetic resonance imaging (fMRI) is a powerful neuroimaging modality that allows the non-invasive study of brain function with high spatial resolution and coverage. It has been extensively used in cognitive neurosciences as well as in presurgical planning to map brain regions associated to a specific behavioral task. In addition, fMRI has been used to study functional connectivity (FC) during resting-state conditions. However, spontaneous fluctuations in physiological processes such as cardiac and breathing activity, as well as head motion, are known to induce strong fluctuations in the fMRI signal, and even cause systematic biases in FC. Even though several noise correction techniques have been proposed, there is still no consensus on the optimal preprocessing strategy.In this context, the main objectives of this thesis were to develop: (1) methods for modelling the effects of cardiac and breathing activity on fMRI data, and (2) a framework that allows investigators to compare the performance of different preprocessing strategies with respect to the identifiability of large-scale networks and the mitigation of motion artifacts and physiological noise. To this end, we capitalized on publicly available 3T blood oxygenation level-dependent (BOLD) fMRI data from the Human Connectome Project (HCP) along with concurrent recordings of cardiac and breathing activity.The first part of the present thesis sought to improve previously proposed techniques related to the effects of heart rate and breathing pattern on fMRI. We developed an innovative method based on concurrent physiological recordings and numerical optimization techniques that estimates physiological response functions (PRFs) and models the BOLD fluctuations due to changes in heart rate and breathing patterns. Taking advantage of the multisession resting-state fMRI dataset in the HCP, this work demonstrated that the estimated PRFs are characterized by high subject-specificity. It also provided further evidence supporting the physiological origin of the fluctuations in the global signal (GS, i.e. mean timeseries averaged across all voxels in the brain) that has generated much controversy in the field.The second part of this thesis investigated whether fMRI fluctuations induced by cardiac pulsatility can be explained using a convolution model where the input consists of a train of impulses at the time of cardiac contractions. The proposed model, named cardiac pulsatility model (CPM), was compared to a frequently used method (RETROICOR) that aims to remove the fMRI effects of the same source of variance. CPM was found to outperform RETROICOR, particularly for subjects that exhibited high heart rate variability. Moreover, this work provided evidence that the variations in pulse amplitude present in the photoplethysmographic signal explain GS variations that are not attributed to fluctuations in heart rate or breathing pattern.The third part of this thesis aimed to evaluate the performance of a large range of model-based and model-free noise correction techniques with respect to the identification of large-scale networks and mitigation of motion artifacts and effects. The evaluation was based on quality control metrics proposed in the literature as well as novel metrics that assess the identifiability of resting-state networks and the mitigation of motion effects. The main finding was that model-free techniques (e.g. principal component analysis) based on decomposition of data into components outperformed a large number of alternative preprocessing strategies commonly used in fMRI studies"--
Neuroscience In The 21st Century
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Author : Donald W. Pfaff
language : en
Publisher: Springer
Release Date : 2016-10-27
Neuroscience In The 21st Century written by Donald W. Pfaff and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-27 with Medical categories.
Edited and authored by a wealth of international experts in neuroscience and related disciplines, this key new resource aims to offer medical students and graduate researchers around the world a comprehensive introduction and overview of modern neuroscience. Neuroscience research is certain to prove a vital element in combating mental illness in its various incarnations, a strategic battleground in the future of medicine, as the prevalence of mental disorders is becoming better understood each year. Hundreds of millions of people worldwide are affected by mental, behavioral, neurological and substance use disorders. The World Health Organization estimated in 2002 that 154 million people globally suffer from depression and 25 million people from schizophrenia; 91 million people are affected by alcohol use disorders and 15 million by drug use disorders. A more recent WHO report shows that 50 million people suffer from epilepsy and 24 million from Alzheimer’s and other dementias. Because neuroscience takes the etiology of disease—the complex interplay between biological, psychological, and sociocultural factors—as its object of inquiry, it is increasingly valuable in understanding an array of medical conditions. A recent report by the United States’ Surgeon General cites several such diseases: schizophrenia, bipolar disorder, early-onset depression, autism, attention deficit/ hyperactivity disorder, anorexia nervosa, and panic disorder, among many others. Not only is this volume a boon to those wishing to understand the future of neuroscience, it also aims to encourage the initiation of neuroscience programs in developing countries, featuring as it does an appendix full of advice on how to develop such programs. With broad coverage of both basic science and clinical issues, comprising around 150 chapters from a diversity of international authors and including complementary video components, Neuroscience in the 21st Century in its second edition serves as a comprehensive resource to students and researchers alike.
Introduction To Resting State Fmri Functional Connectivity
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Author : Janine Bijsterbosch
language : en
Publisher: Oxford University Press
Release Date : 2017-06-15
Introduction To Resting State Fmri Functional Connectivity written by Janine Bijsterbosch and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-15 with Medical categories.
Spontaneous 'resting-state' fluctuations in neuronal activity offer insights into the inherent organisation of the human brain, and may provide markers for diagnosis and treatment of mental disorders. Resting state functional magnetic resonance imaging (fMRI) can be used to investigate intrinsic functional connectivity networks, which are identified based on similarities in the signal measured from different regions. From data acquisition to results interpretation, An Introduction to Resting State fMRI Functional Connectivity discusses a wide range of approaches without expecting previous knowledge of the reader, making it truly accessible to readers from a broad range of backgrounds. Supplemented with online examples to enable the reader to obtain hands-on experience working with data, the text also provides details to enhance learning for those already experienced in the field. The Oxford Neuroimaging Primers are written for new researchers or advanced undergraduates in neuroimaging to provide a thorough understanding of the ways in which neuroimaging data can be analysed and interpreted. Aimed at students without a background in mathematics or physics, this book is also important reading for those familiar with task fMRI but new to the field of resting state fMRI.
Fmri
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Author : Stephan Ulmer
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-12
Fmri written by Stephan Ulmer 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 2013-06-12 with Medical categories.
Over the past two decades, fMRI has evolved into an invaluable clinical tool for routine brain imaging. This book provides a state of the art overview of fMRI and its use in clinical practice. Experts in the field share their knowledge and explain how to overcome diverse potential technical barriers and problems. Starting from the very basics on the origin of the BOLD signal, the book covers technical issues, anatomical landmarks, the full range of clinical applications, methods of statistical analysis, and special issues in various clinical fields. Comparisons are made with other brain mapping techniques, such as DTI, PET, TMS, EEG, and MEG, and their combined use with fMRI is also discussed. Since the first edition, original chapters have been updated and new chapters added, covering both novel aspects of analysis and further important clinical applications.
Introduction To Functional Magnetic Resonance Imaging
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Author : Richard B. Buxton
language : en
Publisher: Cambridge University Press
Release Date : 2009-08-27
Introduction To Functional Magnetic Resonance Imaging written by Richard B. Buxton and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-08-27 with Medical categories.
This is the second edition of a useful introductory book on a technique that has revolutionized neuroscience, specifically cognitive neuroscience. Functional magnetic resonance imaging (fMRI) has now become the standard tool for studying the brain systems involved in cognitive and emotional processing. It has also been a major factor in the consilience of the fields of neurobiology, cognitive psychology, social psychology, radiology, physics, mathematics, engineering, and even philosophy. Written and edited by a clinician-scientist in the field, this book remains an excellent user's guide to t
Magnetic Resonance Imaging In Movement Disorders
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Author : Paul Tuite
language : en
Publisher: Cambridge University Press
Release Date : 2013-10-10
Magnetic Resonance Imaging In Movement Disorders written by Paul Tuite and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-10 with Medical categories.
The first MRI book focusing solely on movement disorders - it demonstrates both novel and standard imaging methods.