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Study Of Dynamic Functional Br
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Book Synopsis A Study of Dynamic Functional Brain Connectivity Using Functional Magnetic Resonance Imaging (Fmri) by : Zening Fu
Download or read book A Study of Dynamic Functional Brain Connectivity Using Functional Magnetic Resonance Imaging (Fmri) written by Zening Fu and published by . This book was released on 2017-01-26 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Functional Connectivity in Neuropsychiatric Disorders: Methods and Applications by : Wenbin Guo
Download or read book Dynamic Functional Connectivity in Neuropsychiatric Disorders: Methods and Applications written by Wenbin Guo and published by Frontiers Media SA. This book was released on 2020-12-03 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis STUDY OF DYNAMIC FUNCTIONAL BR by : Zening Fu
Download or read book STUDY OF DYNAMIC FUNCTIONAL BR written by Zening Fu and published by Open Dissertation Press. This book was released on 2017-01-26 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "A Study of Dynamic Functional Brain Connectivity Using Functional Magnetic Resonance Imaging (fMRI): Method and Applications" by Zening, Fu, 傅泽宁, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Identifying the statistical interdependence (functional connectivity, FC) between brain regions using functional magnetic resonance imaging (fMRI)is an important approach towards understanding how brain system is organized. Most fMRI studies assumed temporal stationarity of FC, so that the dynamic fluctuations of FC were overlooked. Emerging evidence has shown that FC fluctuates significantly across time and such fluctuations are physiologically relevant. The objectives of this work were (1) to develop novel methods for estimating dynamic FC from non-stationary fMRI signals, and (2) to apply new methods on real-life fMRI datasets for exploring dynamic patterns of FC in tasks and at rest. In particular, new methods were introduced to tackle two key issues in dynamic FC estimation: how to adaptively select window size to estimate dynamic FC and how to estimate dynamic FC networks with sparse architecture and sparse evolution. Firstly, a local polynomial regression (LPR) method was introduced to estimate time-varying covariance (TVCOV) for the inference of dynamic FC. The asymptotic analysis of this covariance estimator was performed and then a data-driven method, intersection of confidence intervals (ICI), was adopted to adaptively determine the window size. Simulation results showed that the LPR-ICI method could achieve robust and reliable performance in estimating TVCOV, making it a powerful tool for studying the dynamic FC from fMRI signals. Secondly, the LPR-ICI method was applied to a visual task fMRI dataset for studying the changes of FC in a block-designed visual checkerboard experiment. Reliable task-related FC changes were identified among activated visual regions during the task block. The results suggested that characterizing the task-related FC dynamics might provide greater insight into condition shifts and coordination between brain regions. Thirdly, the LPR-ICI method was applied to a resting-state fMRI dataset for exploring FC dynamics across the whole brain and investigating their relationships with dynamics of local brain activities. Converging results demonstrated that resting-state FC exhibited remarkable different dynamic patterns across the brain and these dynamic patterns were significantly correlated with the dynamic patterns of brain activities. These findings suggested that the brain might bean adaptive network, in which brain activities and their FC coevolve across time. Lastly, a novel dual l0-penalized (DLP) time-varying in verse covariance estimation method was introduced for estimating sparse dynamic FC networks. This DLP method was able to estimate dynamic networks with sparse architecture and sparse evolution by minimizing a log-likelihood function regularized by two l0-penalties (to enforce sparse architecture and sparse evolution, respectively).A coordinate descent algorithm was developed for searching the local minimizers of the objective function. Extensive simulation results showed that the DLP method could achieve better performance than conventionall1-penalized methods. In summary, two newly-developed methods (LPR-ICI and DLP) could be effective tools for studying dynamic brain FC and our results have advanced the knowledge of how brain regions dynamically coordinate. This study was also clinically relevant, as the quantification of altered FC dynamics in clinical populations of neuropsyc
Book Synopsis Dynamic Functional Studies in Nuclear Medicine in Developing Countries by : International Atomic Energy Agency
Download or read book Dynamic Functional Studies in Nuclear Medicine in Developing Countries written by International Atomic Energy Agency and published by . This book was released on 1989 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium, Vienna, 15-19 August 1988. The papers deal mainly with clinical applications of dynamic functional studies and document some of the problems involved in setting up nuclear medicine facilities in general, and specifically for the diagnosis of the diseases prevalent in less developed countries. Other topics covered are quality control of equipment and the transfer of medical technology.
Book Synopsis Dynamic Functional Connectivity in Neuropsychiatric Disorders: Methods and Applications, volume II by : Zaicu Cui
Download or read book Dynamic Functional Connectivity in Neuropsychiatric Disorders: Methods and Applications, volume II written by Zaicu Cui and published by Frontiers Media SA. This book was released on 2023-06-07 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuropsychiatric disorders have a huge impact on individuals, families and societies. However, the neuropathology underlying cognitive deficits in neuropsychiatric disorders remains unclear. Resting-state functional connectivity provides a powerful way to investigate functional alterations underlying cognitive deficits in neuropsychiatric disorders. Traditional FC analysis measures the correlations of signals with an assumption that functional connectivity remains constant during the observation period. In recent years, several studies have demonstrated the feasibility of dynamic methods in characterization of functional brain changes, such as dynamic functional connectivity investigated by a sliding window method. However, selection of window size, window stepsize and window type are open areas of research and an important parameter to capture the resting-state FC dynamics.
Book Synopsis Sourcebook of Models for Biomedical Research by : P. Michael Conn
Download or read book Sourcebook of Models for Biomedical Research written by P. Michael Conn and published by Springer Science & Business Media. This book was released on 2008-03-07 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection of systems represented in this volume is a unique effort to reflect the diversity and utility of models used in biomedicine. That utility is based on the consideration that observations made in particular organisms will provide insight into the workings of other, more complex systems. This volume is therefore a comprehensive and extensive collection of these important medical parallels.
Book Synopsis Functional Derivation of Vehicle Parameters for Dynamic Studies by : National Aeronautical Establishment (Canada)
Download or read book Functional Derivation of Vehicle Parameters for Dynamic Studies written by National Aeronautical Establishment (Canada) and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neuroimaging Approaches to the Study of Cognitive Aging by : Ronald Cohen
Download or read book Neuroimaging Approaches to the Study of Cognitive Aging written by Ronald Cohen and published by Frontiers Media SA. This book was released on 2020-07-29 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Functional Laws of Psychodynamics by : E. Szekely
Download or read book Functional Laws of Psychodynamics written by E. Szekely and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes the background, conduct, and outcome of part of a long-term project of research into the fundamental processes of psychodynamics. It was first theorized and then shown empirically that such research can lead to the formulation of certain general laws and lawful patterns in psychodynamics. Stated at higher levels of conceptualization, these formulations enable us to explain systemati cally the diverse configurations, effects, and intricacies of dynamic systems in psycho logical functioning. At the same time, the research reported here was intended to con tribute to ongoing efforts to secure a proper base for the study and management of intrapsychic, or inner functional, factors in health and illness. This research project has called for concerted inquiry into psychodynamics along a number of dimensions-theoretical, empirical, methodological, clinical, analytic, qualitative, quantitative, and statistical. The clinical programs required intensive inves tigations, such as in-depth psychodiagnostic examination or psychotherapeutic treat ment of individual patients as well as of nonpatient volunteers. The former were drawn from a large number of patients seen in various settings over several years, whereas the latter were selected from a group of university student volunteers.
Book Synopsis fMRI Neurofeedback by : Michelle Hampson
Download or read book fMRI Neurofeedback written by Michelle Hampson and published by Academic Press. This book was released on 2021-10-09 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: fMRI Neurofeedback provides a perspective on how the field of functional magnetic resonance imaging (fMRI) neurofeedback has evolved, an introduction to state-of-the-art methods used for fMRI neurofeedback, a review of published neuroscientific and clinical applications, and a discussion of relevant ethical considerations. It gives a view of the ongoing research challenges throughout and provides guidance for researchers new to the field on the practical implementation and design of fMRI neurofeedback protocols. This book is designed to be accessible to all scientists and clinicians interested in conducting fMRI neurofeedback research, addressing the variety of different knowledge gaps that readers may have given their varied backgrounds and avoiding field-specific jargon. The book, therefore, will be suitable for engineers, computer scientists, neuroscientists, psychologists, and physicians working in fMRI neurofeedback. Provides a reference on fMRI neurofeedback covering history, methods, mechanisms, clinical applications, and basic research, as well as ethical considerations Offers contributions from international experts—leading research groups are represented, including from Europe, Japan, Israel, and the United States Includes coverage of data analytic methods, study design, neuroscience mechanisms, and clinical considerations Presents a perspective on future translational development
Book Synopsis Psychogenic Movement Disorders by : Mark Hallett
Download or read book Psychogenic Movement Disorders written by Mark Hallett and published by Lippincott Williams & Wilkins. This book was released on 2006 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This groundbreaking volume is the first text devoted to psychogenic movement disorders. Co-published by Lippincott Williams & Wilkins and the American Academy of Neurology, the book contains the highlights of an international, multidisciplinary conference on these disorders and features contributions from leading neurologists, psychiatrists, psychologists, physiatrists, and basic scientists. Major sections discuss the phenomenology of psychogenic movement disorders from both the neurologist's and the psychiatrist's viewpoint. Subsequent sections examine recent findings on pathophysiology and describe current diagnostic techniques and therapies. Also included are abstracts of 16 seminal free communications presented at the conference.
Book Synopsis Dynamic Network Analysis with Applications to Functional Neural Connectivity by : Arash Golibagh Mahyari
Download or read book Dynamic Network Analysis with Applications to Functional Neural Connectivity written by Arash Golibagh Mahyari and published by . This book was released on 2017 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MR Imaging in White Matter Diseases of the Brain and Spinal Cord by : Massimo Filippi
Download or read book MR Imaging in White Matter Diseases of the Brain and Spinal Cord written by Massimo Filippi and published by Springer Science & Business Media. This book was released on 2005-12-29 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, the use of neuroimaging techniques has resulted in outstanding progress in the diagnosis and management of neurological diseases, and this is particularly true of those diseases that affect the white matter of the brain and spinal cord. This book, written by internationally acclaimed experts, comprises a series of comprehensive and up-to-date reviews on the use of MR imaging in these major neurological conditions. The diverse available MR techniques, such as magnetization transfer MRI, diffusion-weighted MRI, MR spectroscopy, functional MRI, cell-specific MRI, perfusion MRI, and microscopic imaging with ultra-high field MRI, offer an extraordinarily powerful means of gaining fundamental in vivo insights into disease processes. The strengths and weaknesses of all these techniques in the study of multiple sclerosis and other relevant diseases are extensively considered. After an introductory section on neuroimaging technology, subsequent sections address disorders of myelination, demyelinating diseases, immune-mediated disorders, and white matter disorders related to aging and other conditions. This book provides a valuable summary of the state of the art in the field, and defines important areas for future research.
Book Synopsis Mood Disorders by : Sudhakar Selvaraj
Download or read book Mood Disorders written by Sudhakar Selvaraj and published by Cambridge University Press. This book was released on 2021-01-07 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mood disorders such as depression and bipolar disorder are common mental illnesses, affecting millions of patients worldwide. The application of newly available brain imaging methods to the study of mood disorders holds substantial promise in uncovering the brain mechanisms affected in these illnesses. This comprehensive and authoritative text features contributions from leading international experts, providing easily accessible information on the study of the brain mechanisms involved in the causation of mood disorders and the available treatments. Topics covered include the potential of magnetoencephalography (MEG), neuroimaging brain inflammation in depression, electrophysiology studies in mood disorders, and the applications of machine learning, filling an important gap in available neuropsychiatric literature and highlighting new developments. An invaluable resource for practitioners in the fields of psychiatry, neurology, primary care medicine, and related mental health professions, as well as researchers, students, graduate and post-graduate trainees.
Book Synopsis The Principles and Practice of Dentofacial Orthopaedics by : Hugo Stockfisch
Download or read book The Principles and Practice of Dentofacial Orthopaedics written by Hugo Stockfisch and published by . This book was released on 1995 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the knowledge needed to combine systems for increased effectiveness and shortened duration of treatment. It does so with a recognition that certain diagnostic factors - morphogenetic, functional, and developmentaltranscend the differences among appliances, and are always the basis for optimal results.
Download or read book The Menisci written by Robert F. LaPrade and published by Springer. This book was released on 2017-02-21 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive journey through the pathogenesis and treatment of meniscal pathology. It details the elements that are necessary to properly understand, diagnose, and treat meniscal tears, ranging from vertical tears to radial tears and root avulsions. Treatment techniques are thoroughly described and illustrated, with presentation of the latest evidence on outcomes. The algorithmic treatment of meniscal tears has undergone a rapid transformation. We have progressed from the initial treatments involving removal of the meniscus using an open technique, to the performance of partial meniscectomies and complex meniscal repairs by means of an arthroscopic technique. The current treatment goal is to maintain the biology and mechanical integrity of this vital knee structure, an aim too often disregarded by past generations of surgeons. An explosion of new knowledge, coupled with advances in arthroscopic and surgical technology, has paved the way for wider application of approaches that help to preserve the meniscus, in the hope of preventing or delaying the development of knee arthritis. This book will have utility for all clinicians who treat meniscal lesions and will serve as a valuable resource for years to come.
Book Synopsis Handbook of functional connectivity Magnetic Resonance Imaging methods in CONN by : Alfonso Nieto-Castanon
Download or read book Handbook of functional connectivity Magnetic Resonance Imaging methods in CONN written by Alfonso Nieto-Castanon and published by Hilbert Press. This book was released on 2020-01-31 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook describes methods for processing and analyzing functional connectivity Magnetic Resonance Imaging (fcMRI) data using the CONN toolbox, a popular freely-available functional connectivity analysis software. Content description [excerpt from introduction] The first section (fMRI minimal preprocessing pipeline) describes standard and advanced preprocessing steps in fcMRI. These steps are aimed at correcting or minimizing the influence of well-known factors affecting the quality of functional and anatomical MRI data, including effects arising from subject motion within the scanner, temporal and spatial image distortions due to the sequential nature of the scanning acquisition protocol, and inhomogeneities in the scanner magnetic field, as well as anatomical differences among subjects. Even after these conventional preprocessing steps, the measured blood-oxygen-level-dependent (BOLD) signal often still contains a considerable amount of noise from a combination of physiological effects, outliers, and residual subject-motion factors. If unaccounted for, these factors would introduce very strong and noticeable biases in all functional connectivity measures. The second section (fMRI denoising pipeline) describes standard and advanced denoising procedures in CONN that are used to characterize and remove the effect of these residual non-neural noise sources. Functional connectivity Magnetic Resonance Imaging studies attempt to quantify the level of functional integration across different brain areas. The third section (functional connectivity measures) describes a representative set of functional connectivity measures available in CONN, each focusing on different indicators of functional integration, including seed-based connectivity measures, ROI-to-ROI measures, graph theoretical approaches, network-based measures, and dynamic connectivity measures. Second-level analyses allow researchers to make inferences about properties of groups or populations, by generalizing from the observations of only a subset of subjects in a study. The fourth section (General Linear Model) describes the mathematics behind the General Linear Model (GLM), the approach used in CONN for all second-level analyses of functional connectivity measures. The description includes GLM model definition, parameter estimation, and hypothesis testing framework, as well as several practical examples and general guidelines aimed at helping researchers use this method to answer their specific research questions. The last section (cluster-level inferences) details several approaches implemented in CONN that allow researchers to make meaningful inferences from their second-level analysis results while providing appropriate family-wise error control (FWEC), whether in the context of voxel-based measures, such as when studying properties of seed-based maps across multiple subjects, or in the context of ROI-to-ROI measures, such as when studying properties of ROI-to-ROI connectivity matrices across multiple subjects.
