Neurovision Rehabilitation Guide

Neurovision Rehabilitation Guide
Author: Amy Chang
Publisher: CRC Press
Total Pages: 168
Release: 2017-12-19
Genre: Medical
ISBN: 1498762573

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Neurovision Rehabilitation Guide is a valuable resource for the health care professional working with patients with visual dysfunction as a consequence of traumatic brain injury and neurological disorders. It covers the concepts of visual dysfunction as well as assessment and step-by-step treatment plans. The guide covers the neurology of visual processing before and after a brain injury. It explains the concepts behind neurovision rehabilitation and how to go about examining and treating the patient’s visual deficits. It also covers the evaluation of visual perceptual deficits and treatment of the traumatic brain injury patient. The guide contains more than 80 vision therapy procedures, with step-by-step instructions as well as sequencing guides for each category of therapy (oculomotor, accommodation, binocular, perceptual).

Neuro-vision Systems

Neuro-vision Systems
Author: Madan M. Gupta
Publisher: New York : IEEE Press
Total Pages: 584
Release: 1994
Genre: Computers
ISBN:

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The Neurology of Vision

The Neurology of Vision
Author: Jonathan D. Trobe
Publisher: Oxford University Press
Total Pages: 487
Release: 2001-03-29
Genre: Medical
ISBN: 0198029721

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The Neurology of Vision sets out the principles and information needed to understand and manage disorders of the visual pathways in the brain. The author divides vision into three components. The optical component addresses the eye's ability to properly focus light on the retina. The retinocortical component converts light into neural signals in the retina, transmitting them to the primary visual cortex. Finally, the integrative component converts this simple visual information into more complicated forms. The symptoms and signs, testing methods, and diseases of each part of the visual system are presented using this unique, structural component approach. A final chapter discusses the visual manifestations of psychiatric disturbances. The book is heavily illustrated with over 150 beautifully rendered line illustrations, 50 radiographic brain images, and 60 retinal photographs. Case studies with teaching questions are also included, to further the reader's knowledge and test understanding.

Neuro-vision Systems

Neuro-vision Systems
Author: Madan M. Gupta
Publisher:
Total Pages: 555
Release: 1994
Genre:
ISBN:

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Neurovision: Neural bases of binocular vision and coordination and their implications in visual training programs

Neurovision: Neural bases of binocular vision and coordination and their implications in visual training programs
Author: Olivier A. Coubard
Publisher: Frontiers Media SA
Total Pages: 266
Release: 2015-10-12
Genre: Binocular vision
ISBN: 2889196550

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Binocular vision is achieved by five neurovisual systems originating in the retina but varying in their destination within the brain. Two systems have been widely studied: the retino-tectal or retino-collicular route, which subserves an expedient and raw estimate of the visual scene through the magnocellular pathway, and the retino-occipital or retino-cortical route, which allows slower but refined analysis of the visual scene through the parvocellular pathway. But there also exist further neurovisual systems: the retino-hypothalamic, retino-pretectal, and accessory optic systems, which play a crucial role in vision though they are less understood. The retino-pretectal pathway projecting onto the pretectum is critical for the pupillary or photomotor reflex. The retino-hypothalamic pathway projecting onto the suprachiasmatic nucleus regulates numerous behavioral and biological functions as well as circadian rhythms. The accessory optic system targeting terminal lateral, medial and dorsal nuclei through the paraoptic fasciculus plays a role in head and gaze orientation as well as slow movements. Taken together, these neurovisual systems involve 60% of brain activity, thus highlighting the importance of vision in the functioning and regulation of the central nervous system. But vision is first and foremost action, which makes perception impossible without movement. Binocular coordination is a prerequisite for binocular fusion of the object of interest on the two foveas, thus ensuring visual perception. The retino-collicular pathway is sufficient to elicit reflexive eye movements with short latencies. Thanks to its motor neurons, the superior colliculus activates premotor neurons, which themselves activate motor neurons of the oculomotor, trochlear and abducens nuclei. At a higher level, a cascade of neural mechanisms participates in the control of decisional eye movements. The superior colliculus is controlled by the substancia nigra pars reticulata, which is itself gated by subcortical structures such as the dorsal striatum. The superior colliculus is also inhibited by the dorsolateral prefrontal cortex through a direct prefrontotectal tract. Cortical areas are crucial for the triggering of eye movements: the frontal eye field, supplementary eye field, and parietal eye field. Finally the cerebellum maintains accuracy. The focus of the present research topic, entitled Neural bases of binocular vision and coordination and their implications in visual training programs, is to review the most recent findings in brain imaging and neurophysiology of binocular vision and coordination in humans and animals with frontally-placed eyes. The emphasis is put on studies that enable transfer of knowledge toward visual training programs targeting visual field defects (e.g., hemianopia) and binocular functional disorders (e.g., amblyopia).

Exploratory Vision

Exploratory Vision
Author: Michael S. Landy
Publisher: Springer Science & Business Media
Total Pages: 351
Release: 2012-12-06
Genre: Computers
ISBN: 1461239842

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Advances in sensing, signal processing, and computer technology during the past half century have stimulated numerous attempts to design general-purpose ma chines that see. These attempts have met with at best modest success and more typically outright failure. The difficulties encountered in building working com puter vision systems based on state-of-the-art techniques came as a surprise. Perhaps the most frustrating aspect of the problem is that machine vision sys tems cannot deal with numerous visual tasks that humans perform rapidly and effortlessly. In reaction to this perceived discrepancy in performance, various researchers (notably Marr, 1982) suggested that the design of machine-vision systems should be based on principles drawn from the study of biological systems. This "neuro morphic" or "anthropomorphic" approach has proven fruitful: the use of pyramid (multiresolution) image representation methods in image compression is one ex ample of a successful application based on principles primarily derived from the study of biological vision systems. It is still the case, however, that the perfor of computer vision systems falls far short of that of the natural systems mance they are intended to mimic, suggesting that it is time to look even more closely at the remaining differences between artificial and biological vision systems.

Blind Vision

Blind Vision
Author: Zaira Cattaneo
Publisher: MIT Press
Total Pages: 285
Release: 2011-03-04
Genre: Psychology
ISBN: 026201503X

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An investigation of the effects of blindness and other types of visual deficit on cognitive abilities. Can a blind person see? The very idea seems paradoxical. And yet, if we conceive of "seeing" as the ability to generate internal mental representations that may contain visual details, the idea of blind vision becomes a concept subject to investigation. In this book, Zaira Cattaneo and Tomaso Vecchi examine the effects of blindness and other types of visual deficit on the development and functioning of the human cognitive system. Drawing on behavioral and neurophysiological data, Cattaneo and Vecchi analyze research on mental imagery, spatial cognition, and compensatory mechanisms at the sensorial, cognitive, and cortical levels in individuals with complete or profound visual impairment. They find that our brain does not need our eyes to "see." Cattaneo and Vecchi address critical questions of broad importance: the relationship of visual perception to imagery and working memory and the extent to which mental imagery depends on normal vision; the functional and neural relationships between vision and the other senses; the specific aspects of the visual experience that are crucial to cognitive development or specific cognitive mechanisms; and the extraordinary plasticity of the brain—as illustrated by the way that, in the blind, the visual cortex may be reorganized to support other perceptual or cognitive funtions. In the absence of vision, the other senses work as functional substitutes and are often improved. With Blind Vision, Cattaneo and Vecchi take on the "tyranny of the visual," pointing to the importance of the other senses in cognition.

The Neurological Treatment for Nearsightedness and Related Vision Problems

The Neurological Treatment for Nearsightedness and Related Vision Problems
Author: John William Yee
Publisher: CRC Press
Total Pages: 322
Release: 2019-05-28
Genre: Health & Fitness
ISBN: 0429877447

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This volume introduces and explains an eye-opening treatment for correcting nearsightedness and related vision problems naturally and neurologically. The author presents his methodology on neurologically correcting primary refractive errors in the mild and moderate myopic range. Ortho C (or orthoculogy, which is Latin for "correcting the whole eye") is a natural treatment, requiring no alteration to the cornea. Key features of the book: • Introduces a neurological and natural treatment for the correction of nearsightedness • Presents many case studies showing the effectiveness of this treatment, based on the author’s 30+ years of research • Provides step-by-step instructions for designing lenses to suit the need, determining the sequence of wear, and conducting resistance tests • Grants readers the right to apply Ortho C to treat any patients with mild and moderate myopia, anisometropia, or compound astigmatism.

Vision and Brain

Vision and Brain
Author: James V. Stone
Publisher: MIT Press
Total Pages: 275
Release: 2012-09-14
Genre: Psychology
ISBN: 0262517736

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An engaging introduction to the science of vision that offers a coherent account of vision based on general information processing principles In this accessible and engaging introduction to modern vision science, James Stone uses visual illusions to explore how the brain sees the world. Understanding vision, Stone argues, is not simply a question of knowing which neurons respond to particular visual features, but also requires a computational theory of vision. Stone draws together results from David Marr's computational framework, Barlow's efficient coding hypothesis, Bayesian inference, Shannon's information theory, and signal processing to construct a coherent account of vision that explains not only how the brain is fooled by particular visual illusions, but also why any biological or computer vision system should also be fooled by these illusions. This short text includes chapters on the eye and its evolution, how and why visual neurons from different species encode the retinal image in the same way, how information theory explains color aftereffects, how different visual cues provide depth information, how the imperfect visual information received by the eye and brain can be rescued by Bayesian inference, how different brain regions process visual information, and the bizarre perceptual consequences that result from damage to these brain regions. The tutorial style emphasizes key conceptual insights, rather than mathematical details, making the book accessible to the nonscientist and suitable for undergraduate or postgraduate study.

Understanding Vision

Understanding Vision
Author: Li Zhaoping
Publisher: Oxford University Press, USA
Total Pages: 397
Release: 2014
Genre: Medical
ISBN: 0199564663

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Vision science has grown hugely in the past decades, but there have been few books showing readers how to adopt a computional approach to understanding visual perception, along with the underlying mechanisms in the brain. This book explains the computational principles and models of biological visual processing, and in particular, primate vision.