Download or read book The Use of Fractal Analysis in Cat Retinal Ganglion Cell Classification written by Herbert Franz Jelinek and published by . This book was released on 1996 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parallel Processing in the Visual System written by Jonathan Stone and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the mid-sixties, John Robson and Christina Enroth-Cugell, without realizing what they were doing, set off a virtual revolution in the study of the visual system. They were trying to apply the methods of linear systems analysis (which were already being used to describe the optics of the eye and the psychophysical performance of the human visual system) to the properties of retinal ganglion cells in the cat. Their idea was to stimulate the retina with patterns of stripes and to look at the way that the signals from the center and the antagonistic surround of the respective field of each ganglion cell (first described by Stephen Kuffier) interact to generate the cell's responses. Many of the ganglion cells behaved themselves very nicely and John and Christina got into the habit (they now say) of calling them I (interesting) cells. However. to their annoyance, the majority of neurons they recorded had nasty, nonlinear properties that couldn't be predicted on the basis of simple summ4tion of light within the center and the surround. These uncoop erative ganglion cells, which Enroth-Cugell and Robson at first called D (dull) cells, produced transient bursts of impulses every time the distribution of light falling on the receptive field was changed, even if the total light flux was unaltered.

Download or read book The Fractal Geometry of the Brain written by Antonio Di Ieva and published by Springer Nature. This book was released on with total page 999 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Complex Systems written by Rob Stocker and published by IOS Press. This book was released on 1996 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years the study of Complex Systems has proven to be a fruitful and expanding field of research. Just as the number of discoveries and applications has grown, so has level of acceptance in academic, government and commercial environments. Theoretical and practical contributions to research have continued to provide a springboard for wide ranging discoveries across many disciplines investigating complex phenomena. This is the third in a series of collected studies on complexity research. This volume addresses one of the central issues of complexity. That is, how are systems put together? How do interactions between individual elements build up into the behavior or properties of an entire system? The topics are: - Organization and Behavior of Computational Systems; - Criticality and Complexity; - Nonlinear Dynamics and Fractals; - Computational Problem Solving with Genetic Algorithms and Cellular Automata; - Evolution, Learning and Artificial Neural Networks; - From Biological Systems to Artificial Life.

Download or read book The Response of the Cat Retinal Ganglion Cell written by Lawrence Henry Pinto and published by . This book was released on 1970 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shape Classification and Analysis written by Luciano da Fona Costa and published by CRC Press. This book was released on 2018-10-03 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because the properties of objects are largely determined by their geometric features, shape analysis and classification are essential to almost every applied scientific and technological area. A detailed understanding of the geometrical features of real-world entities (e.g., molecules, organs, materials and components) can provide important clues about their origin and function. When properly and carefully applied, shape analysis offers an exceedingly rich potential to yield useful applications in diverse areas ranging from material sciences to biology and neuroscience. Get Access to the Authors’ Own Cutting-Edge Open-Source Software Projects—and Then Actually Contribute to Them Yourself! The authors of Shape Analysis and Classification: Theory and Practice, Second Edition have improved the bestselling first edition by updating the tremendous progress in the field. This exceptionally accessible book presents the most advanced imaging techniques used for analyzing general biological shapes, such as those of cells, tissues, organs, and organisms. It implements numerous corrections and improvements—many of which were suggested by readers of the first edition—to optimize understanding and create what can truly be called an interactive learning experience. New Material in This Second Edition Addresses Graph and complex networks Dimensionality reduction Structural pattern recognition Shape representation using graphs Graphically reformulated, this edition updates equations, figures, and references, as well as slides that will be useful in related courses and general discussion. Like the popular first edition, this text is applicable to many fields and certain to become a favored addition to any library. Visit http://www.vision.ime.usp.br/~cesar/shape/ for Useful Software, Databases, and Videos

Download or read book Retinal Ganglion Cells written by Raymond Chi Shing Wong and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The retina is responsible for encoding different aspects of the visual world. Light enters the eyes and is converted by the photoreceptors into electrochemical signals. These signals are processed by the retinal network and proceed afferently to the brain via the axons of the retinal ganglion cells (RGCs). The RGCs outputs are in the form of action potentials (spikes), which encrypt the visual information in terms of spike shape, firing frequencies, and the firing patterns. When the photoreceptors are gone due to disease, vision is lost. The idea of a retinal prosthesis is to activate the surviving RGCs by electrical stimulation in order to recreate vision. In this thesis, I have studied the physiological properties of the RGCs, and reconstructed natural RGC spike trains by electrical stimulation. Chapter 1 introduces the anatomy of the retina and the retinal neurons. How the RGCs respond to light. Electrical stimulation is also discussed. A brief historical summary of the receptive field properties and cell physiology is also presented. Chapter 2 characterizes the intrinsic properties of 16 morphologically defined types of rat RGCs. The intrinsic properties include the biophysical properties due to morphology and dendritic stratification, in addition to physiological properties such as firing behaviours. These properties are also compared with the cat RGC intrinsic properties in order to investigate the variations between the morphologically similar RGCs of the two species. The results suggest that the RGCs among species, even with similar morphologies, do not have conservative intrinsic properties. Chapter 3 examines the details of the spiking properties of the different rat RGC types. Spikes are initiated at the axonal initial segment. A 'single' spike recorded at the soma consists of an axonal spike and a somatic spike. The existence of the two spikes can be recognized by two humps in the phase plot, and further revealed in the higher derivatives of the membrane potential. A principal component analysis shows that the parameters extracted from the phase plots are very useful for a model-independent rat RGC classification. Chapter 4 establishes the foundations for electrical stimulation of the retina. The question is to what extent optimum placement of the stimulating and reference electrodes might be affected by anatomical location. Here we placed the stimulating electrode above or below the retinal inner limiting membrane and found no statistical difference between the thresholds. In addition, reflective axonal spikes from the cut end are discussed. Chapter 5 combines the knowledge obtained in the previous chapters for the sole purpose of reproducing natural RGC outputs when using electrical stimulation. The light responses of the eye under saccadic movements were recorded and used to form the stimulus patterns. The reconstructions were performed on the brisk-transient (BT) and the brisk-sustained (BS) RGCs. Our results suggested that BT RGCs are more capable of following the stimulated stimulus patterns over a wide range of frequencies than the BS RGCs. Chapter 6 concludes the whole thesis.

Download or read book Fractal Dimensions of Networks written by Eric Rosenberg and published by Springer Nature. This book was released on 2020-07-07 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current interest in fractal dimensions of networks is the result of more than a century of previous research on dimensions. Fractal Dimensions of Networks ties the theory and methods for computing fractal dimensions of networks to the “classic” theory of dimensions of geometric objects. The goal of the book is to provide a unified treatment of fractal dimensions of sets and networks. Since almost all of the major concepts in fractal dimensions originated in the study of sets, the book achieves this goal by first clearly presenting, with an abundance of examples and illustrations, the theory and algorithms for sets, and then showing how the theory and algorithms have been applied to networks. Thus, the book presents the classical theory and algorithms for the box counting dimension for sets, and then presents the box counting dimension for networks. All the major fractal dimensions are studied, e.g., the correlation dimension, the information dimension, the Hausdorff dimension, the multifractal spectrum, as well as many lesser known dimensions. Algorithm descriptions are accompanied by worked examples, many applications of the methods are presented, and many exercises, ranging in difficulty from easy to research level, are included.

Download or read book 11th International Conference on Image Analysis and Processing written by Edoardo Ardizzone and published by . This book was released on 2001 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Biology written by James D. Murray and published by Springer Science & Business Media. This book was released on 2007-06-12 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Biology is a richly illustrated textbook in an exciting and fast growing field. Providing an in-depth look at the practical use of math modeling, it features exercises throughout that are drawn from a variety of bioscientific disciplines - population biology, developmental biology, physiology, epidemiology, and evolution, among others. It maintains a consistent level throughout so that graduate students can use it to gain a foothold into this dynamic research area.

Download or read book Vitis written by and published by . This book was released on 1997 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neurolaryngology written by Robert Thayer Sataloff and published by Plural Publishing. This book was released on 2017-09-22 with total page 1193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurolaryngology brings together in one volume the latest concepts in this important and developing field. In order to make this text as useful as possible for clinicians, selected chapters on general concepts important to clinical care have been included, including chapters on history, physical examination, clinical voice laboratory assessment, common diagnoses and treatments, and other topics important to all voice patients, including those with neurolaryngological complaints. Starting with a perspective on modern voice medicine, including neurolaryngology and a brief historical overview of the development of laryngology, the text goes on to describe neuroanatomy and physiology, laryngeal function, and the role of chaos in voice disorders. It contains fascinating new ideas on applications of nonlinear dynamics to voice care and research, a topic of great relevance in neurolaryngology. Beginning the section on clinical assessment of voice disorders is a description of the current approach to history and physical examination recommended for patients with neurolaryngological voice disorders. The text contains the most current research and references throughout, presenting the latest information about many conditions, including some rarely covered in the laryngologic literature; it highlights diagnosis and treatment of a wide array of motor and sensory disorders that may impair voice. The interdisciplinary expertise of numerous authors has been invaluable in the preparation of this text; however, every effort has been made to maintain style and continuity throughout. Clinically relevant and thought provoking, Neurolaryngology is the definitive encyclopedic reference in this new subspecialty of laryngology.

Download or read book Characterization of Particles from Wastewater and Sludge Treatment Facilities by Size and Morphology written by Matthew David Warfel and published by . This book was released on 1998 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Pattern Recognition ICAPR2003 written by and published by Allied Publishers. This book was released on 2003 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Professional Voice Fourth Edition written by Robert Thayer Sataloff and published by Plural Publishing. This book was released on 2017-06-30 with total page 2213 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive reference on voice care and science ever published! Substantially revised and updated since the previous edition published in 2005, Professional Voice: The Science and Art of Clinical Care, Fourth Edition provides the latest advances in the field of voice care and science. In three volumes, it covers basic science, clinical assessment, nonsurgical treatments, and surgical management. Twenty new chapters have been added. These include an in-depth chapter on pediatric voice disorders, chapters detailing how hormonal contraception, autoimmune disorders, and thyroid disorders affect the voice, as well as chapters on the evolution of technology in the voice care field, and advances in imaging of the voice production system. The appendices also have been updated. They include a summary of the phonetic alphabet in five languages, clinical history and examination forms, a special history form translated into 15 languages, sample reports from a clinical voice evaluation, voice therapy exercise lists, and others. The multidisciplinary glossary remains an invaluable resource. Key Features With contributions from a Who's Who of voice across multiple disciplines120 chapters covering all aspects of voice science and clinical careFeatures case examples plus practical appendices including multi-lingual forms and sample reports and exercise listsComprehensive indexMultidisciplinary glossary What's New Available in print or electronic format20 new chaptersExtensively revised and reorganized chaptersMany more color photographs, illustrations, and case examplesFully updated comprehensive glossaryMajor revisions with extensive new information and illustrations, especially on voice surgery, reflux, and structural abnormalities New Chapters 1. Formation of the Larynx: From Hox Genes to Critical Periods 2. High-Speed Digital Imaging 3. Evolution of Technology 4. Magnetic Resonance Imaging of the Voice Production System 5. Pediatric Voice Disorders 6. The Vocal Effects of Thyroid Disorders and Their Treatment 7. The Effects of Hormonal Contraception on the Voice 8. Cough and the Unified Airway 9. Autoimmune Disorders 10. Respiratory Behaviors and Vocal Tract Issues in Wind Instrumentalists 11. Amateur and Professional Child Singers: Pedagogy and Related Issues 12. Safety of Laryngology Procedures Commonly Performed in the Office 13. The Professional Voice Practice 14. Medical-Legal Implications of Professional Voice Care 15. The Physician as Expert Witness 16. Laryngeal Neurophysiology 17. The Academic Practice of Medicine 18. Teamwork 19. Medical Evaluation Prior to Voice Lessons 20. Why Study Music? Intended Audiences Individuals While written primarily for physicians and surgeons, this comprehensive work is also designed to be used by (and written in language accessible to) speech-language pathologists, singing voice specialists, acting voice specialists, voice teachers, voice/singing performers, nurses, nurse practitioners, physician assistants, and others involved in the care and maintenance of the human voice. Libraries It is a must-have reference for medical and academic libraries at institutions with otolaryngology, speech-language pathology, music, nursing and other programs related to the human voice.

Download or read book Modeling in the Neurosciences written by R.R. Poznanski and published by Routledge. This book was released on 2019-01-22 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from more than 40 renowned experts, Modeling in the Neurosciences: From Ionic Channels to Neural Networks is essential for those interested in neuronal modeling and quantitative neiroscience. Focusing on new mathematical and computer models, techniques and methods, this monograph represents a cohesive and comprehensive treatment

Download or read book Biologically Motivated Computer Vision written by Seong-Whang Lee and published by Springer Science & Business Media. This book was released on 2000-05-03 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is our great pleasure and honor to organize the First IEEE Computer Society International Workshop on Biologically Motivated Computer Vision (BMCV 2000). The workshop BMCV 2000 aims to facilitate debates on biologically motivated vision systems and to provide an opportunity for researchers in the area of vision to see and share the latest developments in state-of-the-art technology. The rapid progress being made in the field of computer vision has had a tremendous impact on the modeling and implementation of biologically motivated computer vision. A multitude of new advances and findings in the domain of computer vision will be presented at this workshop. By December 1999 a total of 90 full papers had been submitted from 28 countries. To ensure the high quality of workshop and proceedings, the program committee selected and accepted 56 of them after a thorough review process. Of these papers 25 will be presented in 5 oral sessions and 31 in a poster session. The papers span a variety of topics in computer vision from computational theories to their implementation. In addition to these excellent presentations, there will be eight invited lectures by distinguished scientists on “hot” topics. We must add that the program committee and the reviewers did an excellent job within a tight schedule.