Download or read book Further Contributions to the Study of Neocortical Origins Input Cells IT Cells and the Alligator Dorsal Telencephalon written by Steven Daniel Briscoe and published by . This book was released on 2017 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: These molecular findings on input cells and IT cells were extended to a reptile, the American alligator (Alligator mississippiensis). Transcription factor marker genes for input and IT cells were found to be expressed in both the crocodilian dorsal ventricular ridge and the cerebral cortex. I identified a clear reptilian mesopallium. The surprising finding that neocortical cell-type homologs are organized into neocortex-like layers in the alligator dorsal cortex indicates a previously unappreciated cellular and architectural complexity to reptile cerebral cortex.
Download or read book Origin and Evolution of the Vertebrate Telencephalon with Special Reference to the Mammalian Neocortex written by Francisco Aboitiz and published by Springer Science & Business Media. This book was released on 2007-05-24 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: How could a structure as complex as the vertebrate brain develop from the simplest multicellular animals? Natural selection offers an impeccable mechanism for the gradual transformation of species, but even Darwin sometimes expressed doubts about the origin of highly complex structures. Following an approach that has been termed "developmental evolutionary genetics," this book seeks to establish a correspondence between embryological processes and the phylogenetic history of an organism.
Download or read book Neocortical Development written by Shirley Ann Bayer and published by Lippincott Williams & Wilkins. This book was released on 1991 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developmental Origins and Heterogeneity of the Neocortical Oligodendrocyte Lineage written by Caitlin C. Winkler and published by . This book was released on 2019 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of neocortical circuits during development requires coordinated production of excitatory projection neurons, astrocytes, and oligodendrocytes from a shared pool of neural progenitor cells. While we are beginning to understand the molecular mechanisms underlying the specification of neurons and astrocytes, far less is known about the developmental origins of the oligodendrocyte lineage and how oligodendrocytes are generated from neocortical progenitor cells. Considering the importance of oligodendrocytes for proper function of the neocortex, it is critical to understand the mechanisms that govern their specification and development. Here, I describe three studies that investigate various aspects of neocortical oligodendrocyte formation and development. First, I present evidence that most oligodendrocytes in the cerebral cortex are derived locally from neocortical progenitors, and that this dorsal wave of oligodendrogenesis occurs earlier than previously reported. Additionally, I show that the dorsal wave of oligodendrogenesis depends on highly regulated Sonic hedgehog (Shh) signaling from multiple embryonic sources. Second, I provide data that suggests that the neocortical oligodendrocyte lineage is heterogeneous. Specifically, I show that distinct subclasses of the oligodendrocyte lineage appear to have differential requirements for Shh signaling. Last, I demonstrate that a subpopulation of neocortical progenitors marked by expression of Achaete-scute homolog 1 (Ascl1) can generate oligodendrocytes and provide preliminary evidence that Ascl1 expression might be upregulated by Shh signaling as the dorsal forebrain is ventralized to promote oligodendrogenesis over neurogenesis. Together, these studies begin to shed light on oligodendrocyte development in the neocortex by beginning to elucidate signaling mechanisms that regulate specification and heterogeneity of the oligodendrocyte lineage.
Download or read book Journal f r Hirnforschung written by and published by . This book was released on 1979 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Multiple Realization Book written by Thomas W. Polger and published by Oxford University Press. This book was released on 2016 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thomas W. Polger and Lawrence A. Shapiro offer the first full investigation of multiple realization--the idea that minds can be realized in ways other than the human brain. They cast doubt on the hypothesis and offer an alternative framework for understanding explanations in the cognitive sciences, and in chemistry, biology, and related fields.
Download or read book Comparative Vertebrate Neuroanatomy written by Ann B. Butler and published by John Wiley & Sons. This book was released on 2005-09-02 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparative Vertebrate Neuroanatomy Evolution and Adaptation Second Edition Ann B. Butler and William Hodos The Second Edition of this landmark text presents a broad survey of comparative vertebrate neuroanatomy at the introductory level, representing a unique contribution to the field of evolutionary neurobiology. It has been extensively revised and updated, with substantially improved figures and diagrams that are used generously throughout the text. Through analysis of the variation in brain structure and function between major groups of vertebrates, readers can gain insight into the evolutionary history of the nervous system. The text is divided into three sections: * Introduction to evolution and variation, including a survey of cell structure, embryological development, and anatomical organization of the central nervous system; phylogeny and diversity of brain structures; and an overview of various theories of brain evolution * Systematic, comprehensive survey of comparative neuroanatomy across all major groups of vertebrates * Overview of vertebrate brain evolution, which integrates the complete text, highlights diversity and common themes, broadens perspective by a comparison with brain structure and evolution of invertebrate brains, and considers recent data and theories of the evolutionary origin of the brain in the earliest vertebrates, including a recently proposed model of the origin of the brain in the earliest vertebrates that has received strong support from newly discovered fossil evidence Ample material drawn from the latest research has been integrated into the text and highlighted in special feature boxes, including recent views on homology, cranial nerve organization and evolution, the relatively large and elaborate brains of birds in correlation with their complex cognitive abilities, and the current debate on forebrain evolution across reptiles, birds, and mammals. Comparative Vertebrate Neuroanatomy is geared to upper-level undergraduate and graduate students in neuroanatomy, but anyone interested in the anatomy of the nervous system and how it corresponds to the way that animals function in the world will find this text fascinating.
Download or read book Dorsal Ventricular Ridge written by Philip Steven Ulinski and published by Wiley-Interscience. This book was released on 1983 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phantoms in the Brain written by V. S. Ramachandran and published by Harper Collins. This book was released on 1999-08-18 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuroscientist V.S. Ramachandran is internationally renowned for uncovering answers to the deep and quirky questions of human nature that few scientists have dared to address. His bold insights about the brain are matched only by the stunning simplicity of his experiments -- using such low-tech tools as cotton swabs, glasses of water and dime-store mirrors. In Phantoms in the Brain, Dr. Ramachandran recounts how his work with patients who have bizarre neurological disorders has shed new light on the deep architecture of the brain, and what these findings tell us about who we are, how we construct our body image, why we laugh or become depressed, why we may believe in God, how we make decisions, deceive ourselves and dream, perhaps even why we're so clever at philosophy, music and art. Some of his most notable cases: A woman paralyzed on the left side of her body who believes she is lifting a tray of drinks with both hands offers a unique opportunity to test Freud's theory of denial. A man who insists he is talking with God challenges us to ask: Could we be "wired" for religious experience? A woman who hallucinates cartoon characters illustrates how, in a sense, we are all hallucinating, all the time. Dr. Ramachandran's inspired medical detective work pushes the boundaries of medicine's last great frontier -- the human mind -- yielding new and provocative insights into the "big questions" about consciousness and the self.
Download or read book Principles of Development written by Lewis Wolpert and published by Oxford University Press, USA. This book was released on 1998 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developmental biology is at the core of all biology. This text emphasizes the principles and key developments in order to provide an approach and style that will appeal to students at all levels.
Download or read book Biophysics and Neurophysiology of the Sixth Sense written by Nima Rezaei and published by Springer. This book was released on 2019-04-26 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple senses, like multiple intelligences, are a key to brain variability and therefore human evolution. Besides the traditional five senses (vision, olfaction, gustation, audition, and somatosensory), humans can also perceive the body’s own position (the sense of proprioception) and movement (the vestibular sense). Interoception is the feeling one has about the internal physiological conditions of the entire body. Additionally there is a sense of intuition, also known as the sixth sense. Despite their best efforts, researchers are still unable to concur in specifying the nature of the sixth sense; some consider the sense of proprioception as the sixth sense, whereas others prefer to consider that as a part of interoception. This book will provide a scientific system for the human sixth sense using relevant biophysical and neurophysiological evidence. The power of “sixth sense” seems to be underestimated, due to difficulties in defining the concept clearly. According to socioeconomics and neural physics, the sixth sense is that which permits humans to create perception or to enhance the quality of their perception of events. Roughly speaking, the sixth sense engages a metacognitive process through which prior knowledge and the information received from other sensory modalities are synergized. It is not restricted to specific arrow of time and type of mind or to the observer’s body, but it considers all arrows of time (past, present, future), types of mind (conscious and unconscious), and physical bodies (self and other). However it is expected that the observer has specific biases towards what happens now or would happen in the future and its relation to himself. Particularly, humans appeal to the sixth sense on the road to achieving success in social competitions and to reduce uncertainty in complex decision making processes. In addition to evidence linking genetic components to the sixth sense submodalities, there have been developed strategies for increasing the quality of perceptions provided by the sixth sense. Meditation, through which individuals try to be detached from the world, increases gamma-band activity and that increased gamma-band activity is found following top-down processing. Therefore it can be inferred that the detachment from the environment may enhance synchronization of the wave functions in favor of strengthening the sixth sense. It can serve as the mechanism of enhancement of the sixth sense in those whose sensory systems are intact, it can also serve as the mechanism of compensation in those who have sensory deficiencies. In the latter case, it in fact encourages creativity in the use of relatively strong senses. This justifies Beethoven's deafness and his great musical creativity or Bramblitt's blindness and his enormous capability to paint and many other similar examples. In summary, the present book is divided into five parts. Part 1 (chapters 1-6) provides information about the system of proprioception and its neurophysiology and biophysics. Part 2 (chapters 7-10) examines the system of interoception. The information provided in these two parts would enable us to move towards the next three parts of the story, aimed at developing a scientific system of the sixth sense. The first chapter of part 3 begins with concepts and uses them to arrive at reasonable conclusion that there must be a sense that requires multistep information processing and that is separate from the sense of proprioception and the sense of interoception. Such sense is commonly known as the sixth sense. However it should be re-numbered because the sense of proprioception is already known as the sixth sense. The second chapter of this part is to draw neurocircuitry that innervates the sixth sense in the mind of a man, while the third chapter would address the questions whether the sixth sense system requires an optimal competence or consciousness of mind to function properly and if so which is the optimal state: conscious or unconscious and competence or incompetence. In the fourth chapter of this part, we will focus on the self-other mergence as a pivotal step of the sixth sense system. The next chapter would be of great interest to neurobiologists. It talks about that the human sixth sense of the unseen world, either the unseen arrow of time or the unseen events, requires creativity and therefore the human sixth sense should be considered a source of creativity, variability and thus evolution. In the sixth chapter, the sixth sense is viewed as an economic activity stimulated by social environments. This chapter arisen from the fact that humans are full of enthusiasm to heighten their sixth sense and its accuracy and that they owe their enthusiasm largely to achieving the best possible profit and in other words to wining intense competitions in their life holds mainly on the concept of elasticity. Finally this part is finished by an amazing discussion on the art of the sixth sense. The first chapter of part 4 discusses physical theories that support the existence of sixth sense in the universe. The next chapter is to apply the Bayes’ theory to the sixth sense, leading to the conclusion that the sixth sense improves multisensory integration through optimizing uncertainty of information received from other sensory modalities. Chapter three in this part would address whether relative timing is applicable to the sixth sense like other senses. The last part of book aimed at directly discussing the sixth sense into the context of human health and behavior is organized into four chapters. The first chapter is to discuss neurodevelopmental changes in the sixth sense, while the second and third ones will discuss that in relation to psychiatric and neurological disorders. The most striking question how much power the sixth sense the sixth sense have over human health and behavior is addressed in the fourth chapter of this part and final chapter of book, which will be prepared using neural network models and sophisticated portraits possible for the system of sixth sense.
Download or read book Avian Physiology written by Paul D. Sturkie and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of earlier editions, there has been The new edition has a number of new contributors, a considerable increase in research activity ina number who have written on the nervous system, sense organs, of areas, with each succeeding edition including new muscle, endocrines, reproduction, digestion and immu chapters and an expansion of knowledge in older chap nophysiology. Contributors from previous editions ters. have expanded their offerings considerably. The fourth edition contains two new chapters, on The authors are indebted to various investigators, muscle and immunophysiology, the latter an area journals and books for the many illustrations used. Indi where research on Aves has contributed significantly vidual acknowledgement is made in the legends and to our general knowledge of the subject. references. Preface to the 'Third Edition Since the publication of the first and second editions, pathways of birds and mammals. New contributors in there has been a considerable increase of research activ clude M. R. Fedde and T. B. Bolton, who have com ity in avian physiology in a number of areas, including pletely revised and expanded the chapters on respira endocrinology and reproduction, heart and circulation, tion and the nervous system, respectively, and J. G. respiration, temperature regulation, and to a lesser ex Rogers, Jr. , W. J. Mueller, H. Opel, and D. e. Meyer, who have made contributions to Chapters 2,16, 17, tent in some other areas. There appeared in 1972-1974 a four volume treatise and 19, respectively.
Download or read book The Theoretical Foundation of Dendritic Function written by Wilfrid Rall and published by MIT Press. This book was released on 1995 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of fifteen previously published papers, some of them not widely available, have been carefully chosen and annotated by Rall's colleagues and other leading neuroscientists.
Download or read book Principles of Brain Evolution written by Georg F. Striedter and published by Sinauer Associates Incorporated. This book was released on 2005 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at advanced undergraduate and graduate students, this textbook describes some of the basic principles affecting brain evolution. The author refers to data from a wide array of vertebrates while minimizing technical jargon. Particular attention has been paid to the ways in which changes in brain structure impact function and behavior. The volume concludes with a discussion on how mammal brains diverged from other brains and how Homo sapiens evolved a very large and special brain.
Download or read book Auditory Pathway written by Josef Syka and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the last symposium on "Neuronal Mechanisms of Hearing" held in Prague in 1980 and published in the volume of the same name (J. Syka and L. Aitkin, Eds. , Plenum Press, 1981), remarkable progress has been achieved in the understanding of the auditory system. A variety of new ideas and new methods have emerged. This progress can be easily documented by comparing the volume based on the 1980 Symposium with the program for the 1987 Symposium. For example, there were 45 contributions to auditory physiology in each symposium but there were 27 contributions focusing on anatomy in 1987 as compared to 7 in 1980, and perhaps most telling, there were 12 contributions to the neurochemistry of the system in 1987 while there were only 3 in 1980. In terms of percentages of contributions, neuroanatomy rose from 13% to 32% and neurochemistry (or chemical anatomy) rose from 5% in 1980 to 14% in 1987. These increases in the numbers and proportions of anatomical and neurochemical contributions undoubtedly reflects the increasing availabil ity and rising expertise in the new neuroanatomica1 and biochemical techniques most notably, tract-tracing by exploitation of axonal transport or by intracellular micro-injection methods, and neurotransmitter identifi cation by use of immunocytochemistry or receptor-binding techniques. New ideas have emerged on the function of cochlear hair cells particularly in connection with olivococh1ear bundle stimulation and supported by findings of contractile proteins in outer hair cells.
Download or read book Evolution of Sleep written by Patrick McNamara and published by Cambridge University Press. This book was released on 2010 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is aimed at researchers and graduate students in neuroscience, evolutionary biology, and biological anthropology and to biomedical researchers studying sleep medicine.
Download or read book Hearing written by Stanley A. Gelfand and published by CRC Press. This book was released on 2004-09-28 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brimming with more than more than 1700 references, this reader-friendly and extensively revised Fourth Edition will prove invaluable to instructors and students alike-providing a unified approach to the anatomical, physiological, and perceptual aspects of audition with updated chapters on the latest developments in the field.
