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The Dentate Gyrus
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Book Synopsis The Dentate Gyrus by : Helen E. Scharfman
Download or read book The Dentate Gyrus written by Helen E. Scharfman and published by Elsevier Science Serials. This book was released on 2007 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compilation of the fundamentals of the dentate gyrus, an area of the brain of intense scientific interest due to its capacity for plasticity.
Book Synopsis The Dentate Gyrus: A Comprehensive Guide to Structure, Function, and Clinical Implications by : Helen E. Scharfman
Download or read book The Dentate Gyrus: A Comprehensive Guide to Structure, Function, and Clinical Implications written by Helen E. Scharfman and published by Elsevier. This book was released on 2011-09-22 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dentate gyrus is a part of the brain that has been a topic of intense interest since the beginning of neuroscience, and pioneering studies from the distant and recent past attest to this. One of the reasons for such interest is that this structure provides some of the most remarkable examples of plasticity within the nervous system. In addition, it is critical to normal cognitive function, although exactly how and when is still a question that eludes answers. Furthermore, abnormalities within the dentate gyrus appear to play a role in diverse clinical conditions, from depression to epilepsy and traumatic brain injury. The primary goal of this book is to provide a context, or background, upon which the detailed knowledge of the current era can be appreciated. A series of overviews are provided to clarify essentials related to structural organization and development, cellular components, neurotransmitters and neuromodulators, plasticity, and clinical relevance. * Covers the topic comprehensively from anatomy to cellular and systems perspectives* Includes basic research and addresses translational implications, so it will be useful to both researchers in the laboratory and clinicians who conduct experiments in humans* Chapters provide fundamentals, but also details and ample references for further review of the topic
Book Synopsis Structure, function, and plasticity of hippocampal dentate gyrus microcircuits by : Peter Jonas
Download or read book Structure, function, and plasticity of hippocampal dentate gyrus microcircuits written by Peter Jonas and published by Frontiers Media SA. This book was released on 2015-02-13 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hippocampus mediates several higher brain functions, such as learning, memory, and spatial coding. The input region of the hippocampus, the dentate gyrus, plays a critical role in these processes. Several lines of evidence suggest that the dentate gyrus acts as a preprocessor of incoming information, preparing it for subsequent processing in CA3. For example, the dentate gyrus converts input from the entorhinal cortex, where cells have multiple spatial fields, into the spatially more specific place cell activity characteristic of the CA3 region. Furthermore, the dentate gyrus is involved in pattern separation, transforming relatively similar input patterns into substantially different output patterns. Finally, the dentate gyrus produces a very sparse coding scheme in which only a very small fraction of neurons are active at any one time. How are these unique functions implemented at the level of cells and synapses? Dentate gyrus granule cells receive excitatory neuron input from the entorhinal cortex and send excitatory output to the hippocampal CA3 region via the mossy fibers. Furthermore, several types of GABAergic interneurons are present in this region, providing inhibitory control over granule cell activity via feedback and feedforward inhibition. Additionally, hilar mossy cells mediate an excitatory loop, receiving powerful input from a small number of granule cells and providing highly distributed excitatory output to a large number of granule cells. Finally, the dentate gyrus is one of the few brain regions exhibiting adult neurogenesis. Thus, new neurons are generated and functionally integrated throughout life. How these specific cellular and synaptic properties contribute to higher brain functions remains unclear. One way to understand these properties of the dentate gyrus is to try to integrate experimental data into models, following the famous Hopfield quote: “Build it, and you understand it.” However, when trying this, one faces two major challenges. First, hard quantitative data about cellular properties, structural connectivity, and functional properties of synapses are lacking. Second, the number of individual neurons and synapses to be represented in the model is huge. For example, the dentate gyrus contains ~1 million granule cells in rodents, and ~10 million in humans. Thus, full scale models will be complex and computationally demanding. In this Frontiers Research Topic, we collect important information about cells, synapses, and microcircuit elements of the dentate gyrus. We have put together a combination of original research articles, review articles, and a methods article. We hope that the collected information will be useful for both experimentalists and modelers. We also hope that the papers will be interesting beyond the small world of “dentology,” i.e., for scientists working on other brain areas. Ideally, the dentate gyrus may serve as a blueprint, helping neuroscientists to define strategies to analyze network organization of other brain regions.
Book Synopsis The Hippocampus Book by : Per Andersen
Download or read book The Hippocampus Book written by Per Andersen and published by Oxford University Press. This book was released on 2007 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hippocampus is one of a group of remarkable structures embedded within the brain's medial temporal lobe. Long known to be important for memory, it has been a prime focus of neuroscience research for many years. The Hippocampus Book promises to facilitate developments in the field in a major way by bringing together, for the first time, contributions by leading international scientists knowledgeable about hippocampal anatomy, physiology, and function. This authoritative volume offers the most comprehensive, up-to-date account of what the hippocampus does, how it does it, and what happens when things go wrong. At the same time, it illustrates how research focusing on this single brain structure has revealed principles of wider generality for the whole brain in relation to anatomical connectivity, synaptic plasticity, cognition and behavior, and computational algorithms. Well-organized in its presentation of both theory and experimental data, this peerless work vividly illustrates the astonishing progress that has been made in unraveling the workings of the brain. The Hippocampus Book is destined to take a central place on every neuroscientist's bookshelf.
Download or read book The Dentate Gyrus written by Feng-Ru Tang and published by Nova Science Publishers. This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The dentate gyrus (DG) is one of the most sensitive regions to various brain insults due to the occurrence of neurogenesis in its subgranular zone. Thus, it may serve as a brain sensor to radiation exposure, chemical and biological toxins, alcohol abuse, smoking, drug treatments, hormone imbalances, stress, pain, hypoxia, brain trauma, malnutrition and aging. DG is also involved in the pathogenesis of multiple neurological and neuropsychological disorders including intractable temporal lobe epilepsy (TLE), Alzheimer's disease (AD), major depressive disorder (MDD), post-traumatic stress disorder (PTSD), and schizophrenia. Over decades of research, our understanding regarding the function and physiology of the DG is ever-changing. While it is commonly believed that the dentate granule cells are primarily responsible for executing higher brain functions such as learning and memory, there is increasing evidence demonstrating that the glial cells, particularly microglia, astrocytes and oligodendrocytes, are also involved in memory formation. Therefore, a book that systematically reviews DG structure, function and health implications is needed to update clinicians and researchers with state-of-the-art knowledge. In the first three chapters of this book, the recent progresses in the study of DG development with relevant molecular mechanisms, the cytoarchitectonics of DG with laminar and sublaminar distribution of different types of neurons and glial cells, as well as afferent and efferent of the DG and their neurophysiological roles will be described respectively. In Chapters 4 and 5, DG as a brain sensor to radiation exposure, and pre- and post-natal radiation-induced DG damage and cognitive impairment will be reviewed accordingly. The involvement of DG in pathogenesis of neurological disorders including TLE and AD will be discussed in Chapters 6 and 7. Finally, in the last two chapters, i.e., Chapters 8 and 9, the roles of DG in the development of neuropsychological disorders including MDD, PTSD and schizophrenia will be presented"--
Download or read book The Hippocampus written by Ales Stuchlik and published by BoD – Books on Demand. This book was released on 2018-07-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hippocampus is an important brain region, a true central hub for memory of various kinds and other processes. Neuropsychiatric disorders such as Alzheimer's disease, drug addiction, and schizophrenia are characterized by hippocampal alterations. The dentate gyrus of the hippocampus is a site exhibiting adult neurogenesis. This book covers the topic of the hippocampus from various perspectives. It discusses adult neurogenesis, effect of enriched environments on hippocampal plasticity, and long-term potentiation-associated gene expression. The book also addresses multiscale representations of complex environments and strategies in the hippocampus-dependent spatial tasks. Finally, insight into the hippocampus as a link between negative affect and relapse to psychostimulants is provided. The book collects evidence of various hippocampal functions in healthy and disordered brain.
Book Synopsis The Mouse Nervous System by : Charles Watson
Download or read book The Mouse Nervous System written by Charles Watson and published by Academic Press. This book was released on 2011-11-28 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mouse Nervous System provides a comprehensive account of the central nervous system of the mouse. The book is aimed at molecular biologists who need a book that introduces them to the anatomy of the mouse brain and spinal cord, but also takes them into the relevant details of development and organization of the area they have chosen to study. The Mouse Nervous System offers a wealth of new information for experienced anatomists who work on mice. The book serves as a valuable resource for researchers and graduate students in neuroscience. Systematic consideration of the anatomy and connections of all regions of the brain and spinal cord by the authors of the most cited rodent brain atlases A major section (12 chapters) on functional systems related to motor control, sensation, and behavioral and emotional states A detailed analysis of gene expression during development of the forebrain by Luis Puelles, the leading researcher in this area Full coverage of the role of gene expression during development and the new field of genetic neuroanatomy using site-specific recombinases Examples of the use of mouse models in the study of neurological illness
Book Synopsis The CA3 Region of the Hippocampus: How is it? What is it for? How does it do it? by : Enrico Cherubini
Download or read book The CA3 Region of the Hippocampus: How is it? What is it for? How does it do it? written by Enrico Cherubini and published by Frontiers Media SA. This book was released on 2015-08-19 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CA3 hippocampal region receives information from the entorhinal cortex either directly from the perforant path or indirectly from the dentate gyrus via the mossy fibers (MFs). According to their specific targets (principal/mossy cells or interneurons), MFs terminate with large boutons or small filopodial extensions, respectively. MF-CA3 synapses are characterized by a low probability of release and pronounced frequency-dependent facilitation. In addition MF terminals are endowed with mGluRs that regulate their own release. We will describe the intrinsic membrane properties of pyramidal cells, which can sometimes fire in bursts, together with the geometry of their dendritic arborization. The single layer of pyramidal cells is quite distinct from the six-layered neocortical arrangement. The resulting aligned dendrites provides the substrate for laminated excitatory inputs. They also underlie a precise, diversity of inhibitory control which we will also describe in detail. The CA3 region has an especially rich internal connectivity, with recurrent excitatory and inhibitory loops. In recent years both in vivo and in vitro studies have allowed to better understand functional properties of the CA3 auto-associative network and its role in information processing. This circuit is implicated in encoding spatial representations and episodic memories. It generates physiological population synchronies, including gamma, theta and sharp-waves that are presumed to associate firing in selected assemblies of cells in different behavioral conditions. The CA3 region is susceptible to neurodegeneration during aging and after stresses such as infection or injury. Loss of some CA3 neurones has striking effects on mossy fiber inputs and can facilitate the generation of pathologic synchrony within the CA3 micro-circuit. The aim of this special topic is to bring together experts on the cellular and molecular mechanisms regulating the wiring properties of the CA3 hippocampal microcircuit in both physiological and pathological conditions, synaptic plasticity, behavior and cognition.We will particularly emphasize the dual glutamatergic and GABAergic phenotype of MF-CA3 synapses at early developmental stages and the steps that regulate the integration of newly generated neurons into the adult dentate gyrus-CA3 circuit.
Book Synopsis Jasper's Basic Mechanisms of the Epilepsies by : Jeffrey Noebels
Download or read book Jasper's Basic Mechanisms of the Epilepsies written by Jeffrey Noebels and published by OUP USA. This book was released on 2012-06-29 with total page 1258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jasper's Basic Mechanisms, Fourth Edition, is the newest most ambitious and now clinically relevant publishing project to build on the four-decade legacy of the Jasper's series. In keeping with the original goal of searching for "a better understanding of the epilepsies and rational methods of prevention and treatment.", the book represents an encyclopedic compendium neurobiological mechanisms of seizures, epileptogenesis, epilepsy genetics and comordid conditions. Of practical importance to the clinician, and new to this edition are disease mechanisms of genetic epilepsies and therapeutic approaches, ranging from novel antiepileptic drug targets to cell and gene therapies.
Download or read book Dentate Gyrus written by Zackery Lowes and published by Nova Science Publishers. This book was released on 2014-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dentate gyrus (DG) is an important part of hippocampal formation and is believed to be involved in a variety of brain functions including episodic and spatial memory and the exploration of novel environments. In several neurodegenerative disorders, significant pathology occurs in the DG which may be involved in the development of clinical dementia. This book discusses the structure of the dentate gyrus as well as the role it plays in diseases and potential health implications.
Book Synopsis Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research by : Robert L. Maynard
Download or read book Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research written by Robert L. Maynard and published by Academic Press. This book was released on 2019-02-08 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research presents the detailed systematic anatomy of the rat, with a focus on toxicological needs. Most large works dealing with the laboratory rat provide a chapter on anatomy, but fall far short of the detailed account in this book which also focuses on the needs of toxicologists and others who use the rat as a laboratory animal. The book includes detailed guides on dissection methods and the location of specific tissues in specific organ systems. Crucially, the book includes classic illustrations from Miss H. G. Q. Rowett, along with new color photo-micrographs. Written by two of the top authors in their fields, this book can be used as a reference guide and teaching aid for students and researchers in toxicology. In addition, veterinary/medical students, researchers who utilize animals in biomedical research, and researchers in zoology, comparative anatomy, physiology and pharmacology will find this book to be a great resource. Illustrated with over 100 black and white and color images to assist understanding Contains detailed descriptions and explanations to accompany all images, thus helping with self-study Designed for toxicologic research for people from diverse backgrounds, including biochemistry, pharmacology, physiology, immunology and general biomedical sciences
Book Synopsis Space,Time and Memory in the Hippocampal Formation by : Dori Derdikman
Download or read book Space,Time and Memory in the Hippocampal Formation written by Dori Derdikman and published by Springer. This book was released on 2014-07-08 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of new cell types, such as grid and time cells, in the hippocampus has been accompanied by major anatomical and theoretical insights in the recent years. This book provides comprehensive, up-to-date information about the hippocampal formation and especially the neural basis of episodic memory, spatial location (the formation of the cognitive map) and temporal representation. The first part of the book describes the information flow from pre-hippocampal areas into the hippocampus, the second part discusses the different types of hippocampal processing and finally, the third part depicts the influence that the hippocampal processing has on other brain structures that are perhaps more closely tied to explicit cognitive or behavioral output. This book is intended for neuroscientists, especially for those who are involved in research on the hippocampus, as well as for behavioral scientists and neurologists.
Book Synopsis Memory, Amnesia, and the Hippocampal System by : Neal J. Cohen
Download or read book Memory, Amnesia, and the Hippocampal System written by Neal J. Cohen and published by MIT Press. This book was released on 1993 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this sweeping synthesis, Neal J. Cohen and Howard Eichenbaum bring together converging findings from neuropsychology, neuroscience, and cognitive science that provide the critical clues and constraints for developing a more comprehensive understanding of memory. Specifically, they offer a cognitive neuroscience theory of memory that accounts for the nature of memory impairment exhibited in human amnesia and animal models of amnesia, that specifies the functional role played by the hippocampal system in memory, and that provides further understanding of the componential structure of memory.The authors' central thesis is that the hippocampal system mediates a capacity for declarative memory, the kind of memory that in humans supports conscious recollection and the explicit and flexible expression of memories. They argue that this capacity emerges from a representation of critical relations among items in memory, and that such a relational representation supports the ability to make inferences and generalizations from memory, and to manipulate and flexibly express memory in countless ways. In articulating such a description of the fundamental nature of declarative representation and of the mnemonic capabilities to which it gives rise, the authors' theory constitutes a major extension and elaboration of the earlier procedural-declarative account of memory.Support for this view is taken from a variety of experimental studies of amnesia in humans, nonhuman primates, and rodents. Additional support is drawn from observations concerning the neuroanatomy and neurophysiology of the hippocampal system. The data taken from divergent literatures are shown to converge on the central theme of hippocampal involvement in declarative memory across species and across behavioral paradigms.
Book Synopsis The Dentate Gyrus and Its Role in Seizures by : Charles E. Ribak
Download or read book The Dentate Gyrus and Its Role in Seizures written by Charles E. Ribak and published by Elsevier Publishing Company. This book was released on 1992 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters of this book are grouped to provide a logical sequence for the reader. The first section, entitled Cell Types and Innervation Patterns brings together six presentations that address different aspects of the detailed anatomy of the dentate gyrus. Particular emphasis is placed on the three major cell types, granule cells, basket cells and the heterogeneous cells of the hilus. In addition, two of the chapters focus on the termination pattern of chemically-identified afferents to this region. The section concludes with a paper that bridges the gap between anatomy and the next section: Cellular Physiology and Functional Plasticity of neurons in the dentate gyrus. The five chapters in the second section are devoted to the electrophysiology of different neuronal types of the dentate gyrus. The middle section, entitled Seizures and the Regulation of Gene Expression and Protein Content, demonstrates some remarkable alterations in the expression of neuropeptides, growth factors and intracellular calcium-regulating proteins in experimental models of epilepsy.
Download or read book Dentate Gyrus written by Zackery Lowes and published by . This book was released on 2014-01-01 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dentate gyrus (DG) is an important part of hippocampal formation and is believed to be involved in a variety of brain functions including episodic and spatial memory and the exploration of novel environments. In several neurodegenerative disorders, significant pathology occurs in the DG which may be involved in the development of clinical dementia. This book discusses the structure of the dentate gyrus as well as the role it plays in diseases and potential health implications.
Book Synopsis The Hippocampus by : Philippe Taupin
Download or read book The Hippocampus written by Philippe Taupin and published by Nova Publishers. This book was released on 2007 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hippocampus , the Greek word for seahorse, is one of the most fascinating and intriguing regions of the mammalian brain. It is a bilateral incurved seahorse-shaped structure of the cerebral cortex. The hippocampus has a highly distinctive morphology. It is composed of two regions, the dentate gyrus (DG) and the Cornu Ammonis (CA). The nerve cells of the main layer of the DG and CA regions, the granule cells and pyramidal cells respectively, are organised in a tri-synaptic lamellaire circuit. The granule and pyramidal cells are glutamatergic excitatory. The granule cells elicit unique histological, biochemical, developmental, physio- and pathological features. The hippocampus is also an area of the brain that elicits a high degree of plasticity, like synaptic and phenotypic plasticity. It is also one of the few regions of the brain where neurogenesis, the generation of new nerve cells, occurs throughout adulthood. The hippocampus is involved in physio-and pathological processes, like learning and memory.
Book Synopsis Stem Cells in Development and Disease by :
Download or read book Stem Cells in Development and Disease written by and published by Academic Press. This book was released on 2014-01-15 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume of Current Topics in Developmental Biology covers Stem Cells in Development and Disease. The chapters provide a comprehensive set of reviews covering such topics as the mechanisms of pluripotency in vivo and in vitro, hematopoietic stem cell development, intestinal stem cells and their defining niche, epithelial stem cells in adult skin, the mammary stem cell hierarchy, satellite cells, neural stem cells of the hippocampus, lung stem and progenitor cells in tissue homeostasis and disease, spermatogonial stem cell functions in physiological and pathological conditions, the origin, biology, and therapeutic potential of facultative adult hepatic progenitor cells, nephron progenitor cells, adult stem cell niches, cancer stem cells, pluripotency and cellular heterogeneity, and cellular mechanisms of somatic stem cell aging Covers the area of Stem Cells in Development and Disease International board of authors Provides a comprehensive set of reviews covering such topics as Intestinal Stem Cells, Nephron Stem Cells/Progenitors, Skin epithelial Stem Cells and Lung Stem Cells
