Functional Connections of Cortical Areas


Book Description

Two leading authorities on thalamocortical connections consider how the neural circuits of the brain relate to our actions and perceptions. In this book, two leading authorities on the thalamus and its relationship to cortex build on their earlier findings to arrive at new ways of thinking about how the brain relates to the world, to cognition, and behavior. Based on foundations established earlier in their book Exploring the Thalamus and Its Role in Cortical Function, the authors consider the implications of these ground rules for thalamic inputs, thalamocortical connections, and cortical outputs. The authors argue that functional and structural analyses of pathways connecting thalamus and cortex point beyond these to lower centers and through them to the body and the world. Each cortical area depends on the messages linking it to body and world. These messages relate to the way we act and think; each cortical area receives thalamic inputs and has outputs to motor centers. Sherman and Guillery go on to discuss such topics as the role of branching axons that carry motor instructions as well as copies of these motor instructions for relay to cortex under the control of the thalamic gate. This gate allows the thalamus to control the passage of information on the basis of which cortex relates to the rest of the nervous system.




Hierarchy and dynamics in neural networks


Book Description

Hierarchy is a central feature in the organisation of complex biological systems and particularly the structure and function of neural networks. While other aspects of brain connectivity such as regionalisation, modularity or motif composition have been discussed elsewhere, no detailed analysis has been presented so far on the role of hierarchy and its connection to brain dynamics. Recent discussions among many of our colleagues have shown an increasing interest in hierarchy (of spatial, temporal and dynamic features), and this is an emerging key question in neuroscience as well as generally in the field of network science, due to its links with concepts of control, efficiency and development across scales (e.g. Hilgetag et al. Science, 1996; Ravasz et al. Science, 2002; Bassett et al. PNAS, 2006; Mueller-Linow et al. PLoS Comp. Biol., in press). The proposed Research Topic will address recent findings from a theoretical as well as experimental perspective including contributions under the following four headings: 1) Topology: Detecting and characterizing network hierarchy; 2) Experiments: Neural dynamics across hierarchical scales; 3) Dynamics: Activity spread, oscillations, and synchronization in hierarchical networks; 4) Dynamics: Stable functioning and information processing in hierarchical networks.




The Frontal Cortex


Book Description

An in-depth investigation of the structure, neuronal mechanisms, and computations of the frontal lobe that enable higher-level thought. Experts from neurobiology, neuroanatomy, evolutionary biology, cognitive neuroscience, computational neuroscience, and clinical science examine how the neuronal structure of the frontal lobes enables unique aspects of higher-level thought. Implications for understanding disrupted function in neurological and psychiatric disorders, as well as societal issues, such as volitional control of behavior and educational practice, are also considered.




Brodmann's


Book Description

This is the third edition of the translation, by Laurence Garey, of "Vergleichende Lokalisationslehre der Grosshirnrinde" by Korbinian Brodmann, originally published by Barth-Verlag in Leipzig in 1909. It is one of the major "classics" of the neurological world. Even today it forms the basis for so-called "localisation" of function in the cerebral cortex. Brodmann's "areas" are still used to designate functional regions in the cortex, the part of the brain that brings the world that surrounds us into consciousness, and which governs our responses to the world. For example, we use "area 4" for the "motor" cortex, with which we control our muscles, "area 17" for "visual" cortex, with which we see, and so on. This nomenclature is used by neurologists and neurosurgeons in the human context, as well as by experimentalists in various animals. Indeed, Brodmann's famous "maps" of the cerebral cortex of humans, monkeys and other mammals must be among the most commonly reproduced figures in neurobiological publishing. The most famous of all is that of the human brain. There can be few textbooks of neurology, neurophysiology or neuroanatomy in which Brodmann is not cited, and his concepts pervade most research publications on systematic neurobiology. In spite of this, few people have ever seen a copy of the 1909 monograph, and even fewer have actually read it! There had never been a complete English translation available until the first edition of the present translation of 1994, and the original book had been almost unavailable for 50 years or more, the few antiquarian copies still around commanding high prices. As Laurence Garey, too, used Brodmann’s findings and maps in his neurobiological work, and had the good fortune to have access to a copy of the book, he decided to read the complete text and soon discovered that this was much more than just a report of laboratory findings of a turn-of-the-twentieth-century neurologist. It was an account of neurobiological thinking at that time, covering aspects of comparative neuroanatomy, neurophysiology and neuropathology, as well as giving a fascinating insight into the complex relationships between European neurologists during the momentous times when the neuron theory was still new.







The Primate Nervous System, Part II


Book Description

This volume is the second in the planned coverage of the neurochemical circuitry of the primate central nervous system. While this volume contains only two chapters, their topics and the extraordinarily comprehensive coverage with which the authors have dealt with their topics, will nevertheless contribute equal amounts of knowledge, wisdom, and opportunities for future research extensions as have every volume in this unique series. As such, these chapters extend the goals of this primate series to develop a broad coverage of human and non-human primate chemical neuroanatomic details in a volume which makes clear the known and desirable appreciation for differences between and among subsets of primate brains.The first chapter covers the primate thalamus with equal emphases on new world, old world, pro-simian and human anatomic details and their differences. The second undertakes a comparably comprehensive examination of one of the most intensively studied regions of the primate brain, namely the primate visual cortex. While much has been studied, both chapters also reveal how much remains for future efforts in these enormously important regions which are the archetypes of primate sub-cortical and cortical function.




Micro-, Meso- and Macro-Connectomics of the Brain


Book Description

This book has brought together leading investigators who work in the new arena of brain connectomics. This includes ‘macro-connectome’ efforts to comprehensively chart long-distance pathways and functional networks; ‘micro-connectome’ efforts to identify every neuron, axon, dendrite, synapse, and glial process within restricted brain regions; and ‘meso-connectome’ efforts to systematically map both local and long-distance connections using anatomical tracers. This book highlights cutting-edge methods that can accelerate progress in elucidating static ‘hard-wired’ circuits of the brain as well as dynamic interactions that are vital for brain function. The power of connectomic approaches in characterizing abnormal circuits in the many brain disorders that afflict humankind is considered. Experts in computational neuroscience and network theory provide perspectives needed for synthesizing across different scales in space and time. Altogether, this book provides an integrated view of the challenges and opportunities in deciphering brain circuits in health and disease.




The Primate Visual System


Book Description

The last 20 years of research have been marked by exceptional progress in understanding the organization and functions of the primate visual system. This understanding has been based on the wide application of traditional and newly emerging methods for identifying the functionally significant subdivisions of the system, their interconnections, the




Essential Neuromodulation


Book Description

Neuromodulation is an emerging field that explores the use of electrical, chemical, and mechanical interventions to heal neurological deficits. Such neurostimulation has already shown great promise with disorders and diseases such as chronic pain, epilepsy, and Parkinson's disease. This is the first concise reference covering all of the basic principles of neuromodulation in a single affordable volume for neuro-residents, fellows, and basic clinical practitioners, edited by two prominent clinical experts in the field. This volume emphasizes essential observations from all of the important clinical phases involved in any neuromodulation: targeting, intraoperative assessment, programming, complications, and complication avoidance. There are commonalities to all neuromodulation procedures that must be brought to the forefront to form a cohesive presentation of neuromodulation, and such emphasis will give readers a more solid grounding in the fundamentals needed to embrace this field as a cohesive clinical entity. - Chapters offer point-counterpoint commentary for varied perspectives - Appendix distills current guidelines in easy, accessible format - Chapters follow story of patient care, effectively emphasizing general principles with supporting examples - Offers outstanding scholarship, with over 20% of chapters involving international contributors




The Routledge Handbook of Semiosis and the Brain


Book Description

This Handbook introduces neurosemiotics, a pluralistic framework to reconsider semiosis as an emergent phenomenon at the interface of biology and culture. Across individual and interpersonal settings, meaning is influenced by external and internal processes bridging phenomenological and biological dimensions. Yet, each of these dyads has been segregated into discipline-specific topics, with attempts to chart their intersections proving preliminary at best. Bringing together perspectives from world-leading experts, this volume seeks to overcome these disciplinary divides between the social and the natural sciences at both the empirical and theoretical levels. Its various chapters chart the foundations of neurosemiotics; characterize linguistic and interpersonal dynamics as shaped by neurocognitive, bodily, situational, and societal factors; and examine other daily neurosemiotic occurrences driven by faces, music, tools, and even visceral signals. This comprehensive volume is a state-of the-art resource for students and researchers interested in how humans and other animals construe experience in such fields as cognitive neuroscience, biosemiotics, philosophy of mind, neuropsychology, neurolinguistics, and evolutionary biology.