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Author: Dorothea Jameson Publisher: Springer Science & Business Media ISBN: 3642886582 Category : Medical Languages : en Pages : 822
Book Description
This volume on Visual Psychophysics documents the current status of research aimed toward understanding the intricacies of the visual mechanism and its laws of operation in intact human perceivers. As can be seen from the list of contributors, the problems of vision engage the interest and experimental ingenuity of investi gators from a variety of disciplines. Thus we find authors affiliated with depart ments of biology, medical and physiological physics, ophthalmology, physics, physiology and anatomy, psychology, laboratories of neurophysiology, medical clinics, schools of optometry, visual and othcr types of research institutes. A continuing interplay between psychophysical studies and physiological work is everywhere evident. As more information about the physiological basis of vision accumulates, and new studies and analyses of receptor photochemistry and the neurophysiology of retina and brain appear, psychophysical studies of the intact organism become more sharply focused, sometimes more complex, and often more specialized. Technological advances have increased the variety and precision of the stimulus controls, and advances in measurement techniques have reopened old problems and stimulated the investigation of new ones. In some cases, new concepts are being drawn in to help further our under standing of the laws by which the visual mechanism operates; in other cases, ideas enunciated long ago have been reevaluated, developed more fully, and reified in terms of converging evidence from both psychophysical experiments and unit recordings from visual cells.
Author: Dorothea Jameson Publisher: Springer Science & Business Media ISBN: 3642886582 Category : Medical Languages : en Pages : 822
Book Description
This volume on Visual Psychophysics documents the current status of research aimed toward understanding the intricacies of the visual mechanism and its laws of operation in intact human perceivers. As can be seen from the list of contributors, the problems of vision engage the interest and experimental ingenuity of investi gators from a variety of disciplines. Thus we find authors affiliated with depart ments of biology, medical and physiological physics, ophthalmology, physics, physiology and anatomy, psychology, laboratories of neurophysiology, medical clinics, schools of optometry, visual and othcr types of research institutes. A continuing interplay between psychophysical studies and physiological work is everywhere evident. As more information about the physiological basis of vision accumulates, and new studies and analyses of receptor photochemistry and the neurophysiology of retina and brain appear, psychophysical studies of the intact organism become more sharply focused, sometimes more complex, and often more specialized. Technological advances have increased the variety and precision of the stimulus controls, and advances in measurement techniques have reopened old problems and stimulated the investigation of new ones. In some cases, new concepts are being drawn in to help further our under standing of the laws by which the visual mechanism operates; in other cases, ideas enunciated long ago have been reevaluated, developed more fully, and reified in terms of converging evidence from both psychophysical experiments and unit recordings from visual cells.
Author: G. V. Gersuni Publisher: Academic Press ISBN: 1483258076 Category : Science Languages : en Pages : 348
Book Description
Sensory Processes at the Neuronal and Behavioral Levels is a collection of papers dealing with problems of functional organization of the visual and auditory systems. One paper points out that neurophysiological and psychophysiological research in vision can be combined. The paper compares the cat's contrast stimulation by Hermann's grid that elicits neuronal responses of cells with concentric and simple fields as being similar to the subjective vision in man. Another paper addresses the sources of information in the perception of visual spatial relations. For example, eye movements as the source of information about visual spatial relations are refuted. The visual system already estimates accurately the spatial properties of an object before the onset of eye movements. Another paper discusses certain concepts about the mechanisms of the auditory system. One paper presents the results of an experiment involving some adult cats. They were lightly anesthetized and their responses were recorded when the inferior colliculus, or the left and right auditory cortex were stimulated electrically. Another paper analyzes the mechanism used by insect in recognizing species-specific songs. This book is suitable for neurophysiologists, neurochemists, and researchers dealing with physiological acoustics and the psychophysics of the visual system.
Author: Leonard A Levin Publisher: Elsevier Health Sciences ISBN: 0323057144 Category : Medical Languages : en Pages : 810
Book Description
Drs. Paul L. Kaufman, Albert Alm, Leonard A Levin, Siv F. E. Nilsson, James Ver Hoeve, and Samuel Wu present the 11th Edition of the classic text Adler's Physiology of the Eye, updated to enhance your understanding of ocular function. This full-color, user-friendly edition captures the latest molecular, genetic, and biochemical discoveries and offers you unparalleled knowledge and insight into the physiology of the eye and its structures. A new organization by function, rather than anatomy, helps you make a stronger connection between physiological principles and clinical practice; and more than 1,000 great new full-color illustrations help clarify complex concepts. You can also access the complete contents online at www.expertconsult.com. Deepen your grasp of the physiological principles that underlie visual acuity, color vision, ocular circulation, the extraocular muscle, and much more. Improve your understanding of physiology by referring to this totally updated volume--organized by function, rather than anatomy--and make a stronger connection between physiological principles and clinical practice. Better visualize information with a new, revamped format that includes 1,000 illustrations presented in full-color to better clarify complex concepts and functions. Access the most recent molecular, genetic, and biochemical discoveries affecting eye function, and gain fresh perspectives from a new, international editorial team. Search the entire contents online and download all the illustrations at www.expertconsult.com.
Author: National Research Council Publisher: National Academies Press ISBN: Category : Medical Languages : en Pages : 75
Book Description
Recent vision research has led to the emergence of new techniques that offer exciting potential for a more complete assessment of vision in clinical, industrial, and military settings. Emergent Techniques for Assessment of Visual Performance examines four areas of vision testing that offer potential for improved assessment of visual capability including: contrast sensitivity function, dark-focus of accommodation, dynamic visual acuity and dynamic depth tracking, and ambient and focal vision. In contrast to studies of accepted practices, this report focuses on emerging techniques that could help determine whether people have the vision necessary to do their jobs. In addition to examining some of these emerging techniques, the report identifies their usefulness in predicting performance on other visual and visual-motor tasks, and makes recommendations for future research. Emergent Techniques for Assessment of Visual Performance provides summary recommendations for research that will have significant value and policy implications for the next 5 to 10 years. The content and conclusions of this report can serve as a useful resource for those responsible for screening industrial and military visual function.
Author: Leonard A Levin Publisher: Elsevier Health Sciences ISBN: 0323834078 Category : Medical Languages : en Pages : 840
Book Description
Written and designed to enhance your understanding of ocular function, structure, and anatomy, Adler's Physiology of the Eye is a classic, best-selling text that makes critical information easier to learn and retain. The fully revised 12th Edition continues the successful Adler's approach that connects basic science and clinical aspects in a user-friendly, highly visual format—ideal for study, review, and exam preparation. It captures the latest molecular, genetic, and biochemical discoveries and offers you unparalleled knowledge and insight into the physiology of the eye and its structures. - Covers the full structure and function of the eye and its related anatomy and makes the connection between physiology and clinical practice. - Includes major updates throughout, including new information on OCT/OCTA imaging, new drug delivery methods, ocular biomechanics, and evolving gene therapies. - Organizes content by function, rather than anatomy, to help you make a stronger connection between physiological principles and clinical practice. - Explains the physiological principles that underlie visual acuity, intraocular pressure, ocular circulation, the extraocular muscles, and much more. - Features approximately 1,000 illustrations throughout, including medical artwork; schematics, charts, and graphs; clinical photographs; and more. - Any additional digital ancillary content may publish up to 6 weeks following the publication date.
Author: Hugh Davson Publisher: Academic Press ISBN: 1483259870 Category : Medical Languages : en Pages : 819
Book Description
The Eye: Volume 2, The Visual Process is a compendium of papers that describes the physiology of the eye, particularly the visual functions, the photobiology of the visual process, and the visual pathway. One paper describes the light stimuli used in physiological experiments concerning vision in terms of their spectral energy distribution, particularly the amounts of light absorbed by the photosensitive substances contained in the retinal receptors. Another paper explains the mosaic-like arrangement of the receptors and the variations of this mosaic in the different regions of the retina, including the Purkinje phenomenon which can cause errors in visual measurements. One paper examines the directional properties of the rods at long wavelengths and the theory of the Stiles-Crawford effect. Other papers investigate the limits of the visible spectrum, the scotopic luminous efficiency, theories of dark-adaptation, as well as the minimum retinal illumination, the minimum flux of energy, and the minimum amount necessary for vision. One paper notes that whereas one rod can be stimulated by one quantum (a discrete process involving one pigment molecule), it is not sufficient to make a human subject see a light stimulus. The compendium is invaluable for researchers and investigators involved in physiology, psychology, ophthalmology, and in all branches of ocular physiology.
Author: Dorothea Jameson
Author: Dorothea Jameson
Author: Helga Kolb
Author: Maarten Anne Bouman
Author: Carney Landis
Author: 
Author: G. V. Gersuni
Author: Leonard A Levin
Author: National Research Council
Author: Leonard A Levin
Author: Hugh Davson