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A Systematic Approach To Visual System Rehabilitation Population Receptive Field Analysis And Real Time Functional Magnetic Resonance Imaging Neurofeedback Methods
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Book Synopsis A Systematic Approach to Visual System Rehabilitation - Population Receptive Field Analysis and Real-time Functional Magnetic Resonance Imaging Neurofeedback Methods by : Dorina Papageorgiou
Download or read book A Systematic Approach to Visual System Rehabilitation - Population Receptive Field Analysis and Real-time Functional Magnetic Resonance Imaging Neurofeedback Methods written by Dorina Papageorgiou and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A Systematic Approach to Visual System Rehabilitation - Population Receptive Field Analysis and Real-time Functional Magnetic Resonance Imaging Neurofeedback Methods.
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 Functional Magnetic Resonance Imaging Processing by : Xingfeng Li
Download or read book Functional Magnetic Resonance Imaging Processing written by Xingfeng Li and published by Springer Science & Business Media. This book was released on 2013-09-14 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: With strong numerical and computational focus, this book serves as an essential resource on the methods for functional neuroimaging analysis, diffusion weighted image analysis, and longitudinal VBM analysis. It includes four MRI image modalities analysis methods. The first covers the PWI methods, which is the basis for understanding cerebral flow in human brain. The second part, the book’s core, covers fMRI methods in three specific domains: first level analysis, second level analysis, and effective connectivity study. The third part covers the analysis of Diffusion weighted image, i.e. DTI, QBI and DSI image analysis. Finally, the book covers (longitudinal) VBM methods and its application to Alzheimer’s disease study.
Book Synopsis Advanced Brain Neuroimaging Topics in Health and Disease by : Dorina Papageorgiou
Download or read book Advanced Brain Neuroimaging Topics in Health and Disease written by Dorina Papageorgiou and published by BoD – Books on Demand. This book was released on 2014-05-31 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain is the most complex computational device we know, consisting of highly interacting and redundant networks of areas, supporting specific brain functions. The rules by which these areas organize themselves to perform specific computations have only now started to be uncovered. Advances in non-invasive neuroimaging technologies have revolutionized our understanding of the functional anatomy of cortical circuits in health and disease states, which is the focus of this book. The first section of this book focuses on methodological issues, such as combining functional MRI technology with other brain imaging modalities. The second section examines the application of brain neuroimaging to understand cognitive, visual, auditory, motor and decision-making networks, as well as neurological diseases. The use of non-invasive neuroimaging technologies will continue to stimulate an exponential growth in understanding basic brain processes, largely as a result of sustained advances in neuroimaging methods and applications.
Book Synopsis Development and Application of Methods for Real-time FMRI Neurofeedback by : Mark Kok-Ho Chiew
Download or read book Development and Application of Methods for Real-time FMRI Neurofeedback written by Mark Kok-Ho Chiew and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Exploration of Real-Time Functional Magnetic Resonance Imaging Neurofeedback in Cognition by :
Download or read book An Exploration of Real-Time Functional Magnetic Resonance Imaging Neurofeedback in Cognition written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with an extensive exploration of the use of rt-fMRI neurofeedback in cognition. Specifically, the work presented here comprises the major steps in the development of a suitable experimental framework for rt-fMRI NF in a cognitive brain region: defining a target region, defining a strategy and protocol for training the target region by NF, and testing the cognitive and behavioral effects of NF training. The target region, the anterior mid-cingulate cortex was defined based on its function in the cognitive process of anticipation, which was probed in the Continuous Performan...
Book Synopsis Natural Image Coding in Early Visual Areas by : Cheryl Annette Olman
Download or read book Natural Image Coding in Early Visual Areas written by Cheryl Annette Olman and published by . This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Functional Neuroimaging Methods and Frontiers by : Yongxia Zhou
Download or read book Functional Neuroimaging Methods and Frontiers written by Yongxia Zhou and published by . This book was released on 2018 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical imaging grows to be a broad and modern scientific field. Imaging principles, methods and applications are important topics in this field. While applications and the generalization of techniques start with and rely on theoretical development and novel methodology, introduction and instructions of relatively new ideas, concepts and methods are of pivotal importance to students, beginners and general clinical practitioners in this field. Functional MRI (fMRI) has been widely used for the past 30 years to investigate brain functional changes under physiologic challenges or disease conditions in contrast to a resting state. The physiological contributors to the fMRI signal changes include the blood-oxygenation-dependent level (BOLD) effect and in-flow effect such as the increment in local CBF and arterial oxygenation. Improvement of spatiotemporal resolution of fMRI to enhance neuronal activity specificity and pinpoint the microvasculature activation is the ultimate goal. fMRI functional activity/connectivity and graph theory-based connectome analyses with a multiplex fast imaging technique are recently developed new techniques to provide both a whole-picture and regional specialization of brain resource utilization in a systematic way. The integration of neuroscience and mathematical as well as physical and physiological metrics also promote the innovation and applications of multi-modal imaging equipment development and multi-parametric utilizations in clinical environments, including disease diagnosis and treatment.The aim of this book is intended to provide a whole picture of new fMRI imaging methodological developments from principles to applications, to both beginners and experts in biomedical imaging and healthcare. Several fundamental principles and metrics including BOLD, microvasculature detection and fMRI/EEG coupling will be presented together with some new and up-to-date analytical methods. The conventional statistical methods and relatively new methods of wavelets, dynamic linear correlation coefficients, independent component analysis, EEG source imaging and multi-modal integration will be covered. The authors hope that this book will capture the interests of colleagues in the medical imaging field and could help convey the methodological, technical and developmental resources of neuroimaging applications. This book will provide the current state-of-the-art and frontiers of neuroimaging techniques in basic science and clinical neuroscience research. The authors will present some forefront and interesting multi-dimensional imaging techniques to serve as a textbook and reference manual in fMRI methodological training as well as in the research field. Several distinct imaging perspectives, including cutting-edge imaging methods from acquisition to data analysis as well as multi-modal and multi-parametric quantifications will be described. The relatively new and advanced principles and methods together with interesting examples and application demonstrations would hopefully contribute to the medical imaging teaching and research field and could help facilitate the generalization, interpretation and applications of the proposed neuroimaging methods.
Book Synopsis Mapping Human Visual and Auditory Cortex, Tracking Plasticity, and Linking Fmri to Perception by : Brian Robert Barton
Download or read book Mapping Human Visual and Auditory Cortex, Tracking Plasticity, and Linking Fmri to Perception written by Brian Robert Barton and published by . This book was released on 2013 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 1: The current understanding of the organization of the human visual system is discussed, with emphasis on the travelling wave and population receptive field (pRF) modeling methods of measuring visual field maps (VFMs) in humans. Functional magnetic resonance imaging (fMRI) measurement of pRFs of neurons in the visual cortices of humans revealed VFMs organized into roughly circular `clover leaf' clusters. These VFMs were compared between normal, aging, and diseased brains to understand how the brain changes over time and help develop tools to differentiate normal aging and dementia. Finally, visual working memory, the ability to hold things in mind for brief periods of time, and its likely relationship to VFMs is discussed, with implications for future research. Volume 2: Plasticity, the brain's ability to change itself, is discussed in the context of normal and abnormal development in individuals with rod monochromatism, achiasmia, and a missing right hemisphere, with an emphasis on human fMRI measurement methodology. The rod scotoma lacks rod photoreceptors and thus visual input under low-light conditions, yet subjects report perception in the scotoma to varying degrees across stimuli, which we linked to cortical fMRI measurements in VFMs. Plasticity was measured for visuo-motor transformations by left-right reversing the visual field for normal subjects for extended periods and using fMRI to track changes in their VFMs in posterior parietal cortex. Short-term adaptation to left-right visual field reversal was compared between two polymorphisms of brain-derived neurotrophic factor (BDNF), revealing that subjects with resulting higher plasticity took longer to adapt than their counterparts. Volume 3: The current understanding of the organization of the human auditory system with respect to the tonotopic (frequency) mapping of the cochlea is discussed, with emphasis on the challenges of localizing auditory maps with only one sound dimension. A modified version of the travelling wave method was used to investigate auditory cortex with fMRI, providing the first evidence in humans for two-dimensional auditory field maps (AFMs) consisting of orthogonal tonotopic (frequency) and periodotopic (temporal) gradients. Finally, cross-sensory activation in human primary visual and auditory cortex was measured using the modified travelling wave and pRF modeling fMRI methods.
Book Synopsis Investigation of Spatio-Temporal Effects of FMRI Visual Field Mapping Techniques on by : John J. Janik
Download or read book Investigation of Spatio-Temporal Effects of FMRI Visual Field Mapping Techniques on written by John J. Janik and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Blood oxygenation level dependent functional magnetic resonance imaging has been used extensively for mapping the representation of the visual field within the human brain. Visual field mapping using fMRI has been used clinically to assess patients with cortical pathology and to plan surgical treatment impacting the visual system. The accuracy of fMRI-based visual field mapping methods needs to be better understood for clinical use. This accuracy can be important for presurgical mapping of brain function near a tumor resection site since inaccurate rendition of the underlying neural function could lead to inappropriate resection of viable brain tissue. The most widely used method for visual field mapping is temporal phase mapping. This dissertation investigates the accuracy of temporal phase mapping, specifically focused on the detection of polar angle visual field locations in primary visual cortex. Early studies show that polar angle positions are not uniformly distributed as suggested by animal studies. These non-uniformities are seen as relatively under-represented areas in the visual field maps used to display the fMRI data. This dissertation shows that temporal phase mapping is susceptible to hemodynamic distortions that lead to missassignment of visual field locations. Further analysis of the non-uniformity in the frequency distribution of voxels representing different angular position within the visual field shows an under-representation of locations near the vertical meridia in V1. These results led to the development of a new retinotopic mapping technique, code-based mapping. The main reason for developing a new retinotopic mapping technique was to reduce the under-representations of vertical meridia posed by using temporal phase mapping when assigning a stimulus location to a voxel. This dissertation shows that code-based mapping is a viable method for mapping visual field locations and produces a uniform distribution of voxels representing different angular positions within the visual field. Furthermore, the code-based mapping method is less susceptible to the hemodynamic biases than temporal phase mapping. With respect to clinical utility of fMRI mapping techniques, the code-based mapping shows a greater potential to accurately map a patient's visual field in the presence of a tumor or other malformations that can induce large noise effects in the fMRI voxel responses.
Book Synopsis Creating a New Tool for Post-Traumatic Disorder Treatment by : Idil Demircapa
Download or read book Creating a New Tool for Post-Traumatic Disorder Treatment written by Idil Demircapa and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Adjustment of Stimuli in Real-Time Functional Magnetic Resonance Imaging by : I. Jung Feng
Download or read book Dynamic Adjustment of Stimuli in Real-Time Functional Magnetic Resonance Imaging written by I. Jung Feng and published by . This book was released on 2013 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional fMRI image analysis is performed by carrying out a massive number of parallel regression analyses. fMRI signal is known for its low signal-noise-ratio, and its complexity, such as reflected by spatial and temporal autocorrelation. In order to ensure accurate localization of brain activity, stimulus administration in an fMRI session is often lengthy and repetitive. In real time fMRI, signal processing is carried out while the signal is being observed. This method allows for the dynamic adjustment of stimuli through sequential experimental designs. We have developed a voxel-wise sequential probability ratio test (voxel-wise SPRT) approach for dynamically localizing activation associated with stimuli, as well as decision rules for the stopping of experimentation. Stopping is dynamically determined when sufficient statistical evidence is collected to assess the activation status of voxels across regions of interest. Simulation studies show that the number of scan units can be reduced substantially compared to standard fMRI experimental designs that are fixed and predetermined, while still achieving comparably high levels of classification accuracy. An analysis based on actual brain imaging confirms the promise of this approach.An interesting application of dynamic adjustment of fMRI stimuli is in the area of Alzheimer's disease (AD). It is clear that there is a fair amount of heterogeneity in the cognitive course of the disease. This has led to the development of theories related to the notion of cognitive reserve, which posits that neural capacity, efficiency, and plasticity play a role in this heterogeneity. It has been further hypothesized that cognitive reserve levels at pre-symptomatic stage of AD will manifest specific neural activation patterns under carefully designed fMRI experimentation that systematically varies difficulty levels of a targeted task. A sequential testing approach is proposed for efficiently and accurately identifying and classifying such patterns. Methods for characterizing cognitive reserve that are studied here are comprised of two approaches. The first is sequential estimation through monitoring confidence interval lengths over a range of experimental conditions to assess efficiency and capacity. The other is sequential selection of difficulty levels, to detect neural compensation, which is a reflection of plasticity. Both approaches show high efficiencies and high detection accuracies in our fMRI simulation studies. These two approaches open up new possibilities for studying and characterizing cognitive reserve, which will in turn lead to a better understanding of processes in AD.
Author :David Christopher Luknowsky Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612324947 Total Pages :200 pages Book Rating :4.3/5 (249 download)
Book Synopsis Onset of BOLD FMRI Response Correlates with Visuomotor Reaction Time [microform] by : David Christopher Luknowsky
Download or read book Onset of BOLD FMRI Response Correlates with Visuomotor Reaction Time [microform] written by David Christopher Luknowsky and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1997 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented here are the results of functional magnetic resonance imaging of motor and visual cortical areas performed at 4 Tesla. Subjects executed a cued, visually guided motor task. Activation was detected in the primary motor cortex, the supplementary motor area, the premotor cortex, the somatic-sensory cortex, the posterior parietal cortex, the primary visual cortex, and the middle temporal area. A method for measuring the time interval between onset of the average blood oxygenation level dependent response in the primary visual and motor cortices is proffered. On average, the measured time interval was shown to correlate with the kinematically measured visuomotor reaction time. The same method was used to measure delays in primary visual cortex of each hemisphere in an experiment where there were known delays between half-field visual stimuli. The measured time interval is shown to correlate with stimulus lag over a range of delays from 0-1000 ms.
Download or read book Neuroimaging of Pain written by Luca Saba and published by Springer. This book was released on 2017-06-08 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by world renowned scientists, this book expertly reviews all the imaging techniques and exciting new methods for the analysis of the pain, including novel tracers, biomarker, metabolomic and gene-array profiling, together with cellular, genetic, and molecular approaches. Recent advances in human brain imaging techniques have allowed a better understand of the functional connectivity in pain pathways, as well as the functional and anatomical alterations that occur in chronic pain patients. Modern imaging techniques have permitted rapid progress in the understanding of networks in the brain related to pain processing and those related to different types of pain modulation. Neuroimaging of Pain is designed to be a valuable resource for radiologists, neuroradiologists, neurologists and neuroscientists, working in hospitals and universities from junior trainees to consultants.
Book Synopsis Augmentation of Brain Function: Facts, Fiction and Controversy by : Mikhail Lebedev
Download or read book Augmentation of Brain Function: Facts, Fiction and Controversy written by Mikhail Lebedev and published by Frontiers Media SA. This book was released on 2018-09-14 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume I, entitled “Augmentation of Brain Functions: Brain-Machine Interfaces”, is a collection of articles on neuroprosthetic technologies that utilize brain-machine interfaces (BMIs). BMIs strive to augment the brain by linking neural activity, recorded invasively or noninvasively, to external devices, such as arm prostheses, exoskeletons that enable bipedal walking, means of communication and technologies that augment attention. In addition to many practical applications, BMIs provide useful research tools for basic science. Several articles cover challenges and controversies in this rapidly developing field, such as ways to improve information transfer rate. BMIs can be applied to the awake state of the brain and to the sleep state, as well. BMIs can augment action planning and decision making. Importantly, BMI operations evoke brain plasticity, which can have long-lasting effects. Advanced neural decoding algorithms that utilize optimal feedback controllers are key to the BMI performance. BMI approach can be combined with the other augmentation methods; such systems are called hybrid BMIs. Overall, it appears that BMI will lead to many powerful and practical brain-augmenting technologies in the future.
Book Synopsis The Visual Neurosciences by : John Simon Werner
Download or read book The Visual Neurosciences written by John Simon Werner and published by MIT Press. This book was released on 2004 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential reference book for visual science.
Download or read book Brain-Computer Interfaces written by and published by Elsevier. This book was released on 2020-03-10 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain-Computer Interfacing, Volume 168, not only gives readers a clear understanding of what BCI science is currently offering, but also describes future expectations for restoring lost brain function in patients. In-depth technological chapters are aimed at those interested in BCI technologies and the nature of brain signals, while more comprehensive summaries are provided in the more applied chapters. Readers will be able to grasp BCI concepts, understand what needs the technologies can meet, and provide an informed opinion on BCI science. Explores how many different causes of disability have similar functional consequences (loss of mobility, communication etc.) Addresses how BCI can be of use Presents a multidisciplinary review of BCI technologies and the opportunities they provide for people in need of a new kind of prosthetic Offers a comprehensive, multidisciplinary review of BCI for researchers in neuroscience and traumatic brain injury that is also ideal for clinicians in neurology and neurosurgery
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