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In order to focus on principles, each chapter in this work is brief, organized around 1-3 wiring diagrams of the key circuits, with several pages of text that distil the functional significance of each microcircuit
Microcircuits are the specific arrangements of cells and their connections that carry out the operations unique to each brain region. This resource summarizes succinctly these circuits in over 40 regions - enabling comparisons of principles across both vertebrates and invertebrates. It provides a new foundation for understanding brain function that will be of interest to all neuroscientists. Oxford Clinical Neuroscience is a comprehensive, cross-searchable collection of resources offering quick and easy access to eleven of Oxford University Press's prestigious neuroscience texts. Joining Oxford Medicine Online these resources offer students, specialists and clinical researchers the best quality content in an easy-to-access format.
Leading neuroscientists discuss the function of microcircuits, functional modules that act as elementary processing units bridging single cells to systems and behavior. Microcircuits, functional modules that act as elementary processing units bridging single cells to systems and behavior, could provide the link between neurons and global brain function. Microcircuits are designed to serve particular functions; examples of these functional modules include the cortical columns in sensory cortici, glomeruli in the olfactory systems of insects and vertebrates, and networks generating different aspects of motor behavior. In this Dahlem Workshop volume, leading neuroscientists discuss how microcircuits work to bridge the single cell and systems levels and compare the intrinsic function of microcircuits with their ion channel subtypes, connectivity, and receptors, in order to understand the design principles and function of the microcircuits. The chapters cover the four major areas of microcircuit research: motor systems, including locomotion, respiration, and the saccadic eye movements; the striatum, the largest input station of the basal ganglia; olfactory systems and the neural organization of the glomeruli; and the neocortex. Each chapter is followed by a group report, a collaborative discussion among senior scientists. Contributors Lidia Alonso-Nanclares, Hagai Bergman, Maria Blatow, J. Paul Bolam, Ansgar Büschges, Antonio Caputi, Jean-Pierre Changeux, Javier DeFelipe, Carsten Duch, Paul Feinstein, Stuart Firestein, Yves Frégnac, Rainer W. Friedrich, C. Giovanni Galizia, Ann M. Graybiel, Charles A. Greer, Sten Grillner, Tadashi Isa, Ole Kiehn, Minoru Kimura, Anders Lanser, Gilles Laurent, Pierre-Marie Lledo, Wolfgang Maass, Henry Markram, David A. McCormick, Christoph M. Michel, Peter Mombaerts, Hannah Monyer, Hans-Joachim Pflüger, Dietmar Plenz, Diethelm W. Richter, Silke Sachse, H. Sebastian Seung, Keith T. Sillar, Jeffrey C. Smith, David L. Sparks, D. James Surmeier, Eörs Szathmáry, James M. Tepper, Jeff R. Wickens, Rafael Yuste
How does the motor cortex enable mammals to generate accurate, complex, and purposeful movements? A cubic millimeter of motor cortex contains roughly ̃10̂5 cells, an amazing ̃4 Km of axons and ̃0.4 Km of dendrites, somehow wired together with ̃10̂9 synapses. Corticospinal neurons (a.k.a. Betz cells, upper motor neurons) are a key cell type, monosynaptically conveying the output of the cortical circuit to the spinal cord circuits and lower motor neurons. But corticospinal neurons are greatly outnumbered by all the other kinds of neurons in motor cortex, which presumably also contribute crucially to the computational operations carried out for planning, executing, and guiding actions. Determining the wiring patterns, the dynamics of signaling, and how these relate to movement at the level of specific excitatory and inhibitory cell types is critically important for a mechanistic understanding of the input-output organization of motor cortex. While there is a predictive microcircuit hypothesis that relates motor learning to the operation of the cerebellar cortex, we lack such a microcircuit understanding in motor cortex and we consider microcircuits as a central research topic in the field. This Research Topic covers any issues relating to the microcircuit-level analysis of motor cortex. Contributions are welcomed from neuroscientists at all levels of investigation, from in vivo physiology and imaging in humans and monkeys, to rodent models, in vitro anatomy, electrophysiology, electroanatomy, cellular imaging, molecular biology, disease models, computational modeling, and more.
Cover -- Foundations of the Neuron Doctrine -- Copyright -- Dedication -- Contents -- Preface to the 25th Anniversary Edition -- Preface to the Original Publication -- Commentaries on the "Neuron Doctrine"--Cajal, Golgi, and Ariadne's Thread-Marina Bentivoglio -- Reflections on the Neuron Doctrine-Javier DeFelipe -- The Neuron Doctrine Revisited: A Personal Account-Sten Grillner -- Camillo Golgi, Foundations of the Neuron Doctrine, and the History of Neuroscience-Paolo Mazzarello -- Some Reflections on the Neuron Doctrine-Larry Swanson -- Back to Golgi? Neural Networks as a New Paradigm for Brain Circuits-Rafael Yuste -- 1. Introduction -- 2. From the Beginnings to the Cell Theory -- 3. Do Nerve Cells Belong in the Cell Theory? -- 4. Nerve Cells or Nerve Nets? -- 5. KÖlliker Gives In -- 6. Support Builds for Networks -- 7. The Nerve Cell Studies of Freud -- 8. The Revolutionary Method of Golgi -- 9. A Neuron Theory Begins to Take Form: His, Forel, Nansen -- 10. Ramón y Cajal: The Shock of Recognition -- 11. The Early Discoveries of Cajal -- 12. The Laws of Cajal -- 13. Joining the Mainstream -- 14. The Neuron Doctrine -- 15. The Law of Dynamic Polarization -- 16. Controversy -- 17. The Synapse and the Growth Cone -- 18. Forging a Consensus -- 19. Confrontation in Stockholm -- 20. Modern Revisions of the Neuron Doctrine -- References -- Index.
In 2019 and 2020, a teacher penned monographs whose aim was to instruct neuroanatomy not as textbooks do, but rather by exploring questions students and trainees often ask, altogether innocently–but the answers aren’t straightforward. What have we learned lately about the anatomy of memory? How much of cerebral cortex serves vision? Cortex and subcortex are linked: how are they linked, and what is the functional significance of the connectivity? In this second of two volumes, Miyawaki addresses those three questions in a revised edition of his prior work. The Autumn Brain Seminars is a summation of his decades of teaching.
The brain of each animal shows specific traits that reflect its phylogenetic history and its particular lifestyle. Therefore, comparing brains is not just a mere intellectual exercise, but it helps understanding how the brain allows adaptive behavioural strategies to face an ever-changing world and how this complex organ has evolved during phylogeny, giving rise to complex mental processes in humans and other animals. These questions attracted scientists since the times of Santiago Ramon y Cajal one of the founders of comparative neurobiology. In the last decade, this discipline has undergone a true revolution due to the analysis of expression patterns of morphogenetic genes in embryos of different animals. The papers of this e-book are good examples of modern comparative neurobiology, which mainly focuses on the following four Grand Questions: a) How are different brains built during ontogeny? b) What is the anatomical organization of mature brains and how can they be compared? c) How do brains work to accomplish their function of ensuring survival and, ultimately, reproductive success? d) How have brains evolved during phylogeny? The title of this e-book, Adaptive Function and Brain Evolution, stresses the importance of comparative studies to understand brain function and, the reverse, of considering brain function to properly understand brain evolution. These issues should be taken into account when using animals in the research of mental function and dysfunction, and are fundamental to understand the origins of the human mind.
Challenging the belief that the sense of smell diminished during human evolution, Shepherd argues that this sense, which constitutes the main component of flavor, is far more powerful and essential than previously believed. --from publisher description.
For the interested medical or neuroscience student, or for trainees in neurology, neurosurgery, and psychiatry, Edison K. Miyawaki summarizes years of thinking about structures deep to the brain’s cortical surface. Addressing topics alphabetically, he describes relevant anatomy in humans and other vertebrates, and incorporates advances in subcortical physiology in his discussion. He maintains that knowledge about the relationship between cortex and subcortex is vital not only to an understanding of movement, but also to a deeper sense of our conduct in space and time. Beneath the Cortical Surface is an accessible dictionary regarding how the brain works as a whole.
