Models Of Horizontal Eye Movements Part Ii

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Models Of Horizontal Eye Movements Part I

Author : John Enderle
ISBN : 9781608452330
Genre : Technology & Engineering
File Size : 57.12 MB
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There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-conjugate eye movement allowing the eyes to track targets as they come closer or farther away. In this book, early models of saccades and smooth pursuit are presented. The smooth pursuit system allows tracking of a slow moving target to maintain its position on the fovea. Models of the smooth pursuit have been developed using systems control theory, all involving a negative feedback control system that includes a time delay, controller and plant in the forward loop, with unity feedback. The oculomotor plant and saccade generator are the basic elements of the saccadic system. The oculomotor plant consists of three muscle pairs and the eyeball. A number of oculomotor plant models are described here beginning with the Westheimer model published in 1954, and up through our 1995 model involving a 4th order oculomotor plant model. The work presented here is not an exhaustive coverage of the field, but focused on the interests of the author. In Part II, a state-of-art model of the saccade system is presented, including a neural network that controls the system. Table of Contents: Introduction / Smooth Pursuit Models / Early Models of the Horizontal Saccadic Eye Movement System / Velocity and Acceleration Estimation / 1995 Linear Homeomorphic Saccadic Eye Movement Model
Category: Technology & Engineering

Models Of Horizontal Eye Movements Part Ii

Author : John Enderle
ISBN : 9781608454471
Genre : Technology & Engineering
File Size : 34.10 MB
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There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-conjugate eye movement allowing the eyes to track targets as they come closer or farther away. In this book, a 2009 version of a state-of-the-art model is presented for horizontal saccades that is 3rd-order and linear, and controlled by a physiologically based time-optimal neural network. The oculomotor plant and saccade generator are the basic elements of the saccadic system. The control of saccades is initiated by the superior colliculus and terminated by the cerebellar fastigial nucleus, and involves a complex neural circuit in the mid brain. This book is the second part of a book series on models of horizontal eye movements. Table of Contents: 2009 Linear Homeomorphic Saccadic Eye Movement Model and Post-Saccade Behavior: Dynamic and Glissadic Overshoot / Neural Network for the Saccade Controller
Category: Technology & Engineering

Models Of Horizontal Eye Movements

Author : John Denis Enderle
ISBN : 9781608454464
Genre : Medical
File Size : 41.32 MB
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There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-conjugate eye movement allowing the eyes to track targets as they come closer or farther away. In this book, a 2009 version of a state-of-the-art model is presented for horizontal saccades that is 3rd-order and linear, and controlled by a physiologically based time-optimal neural network. The oculomotor plant and saccade generator are the basic elements of the saccadic system. The control of saccades is initiated by the superior colliculus and terminated by the cerebellar fastigial nucleus, and involves a complex neural circuit in the mid brain. This book is the second part of a book series on models of horizontal eye movements. Table of Contents: 2009 Linear Homeomorphic Saccadic Eye Movement Model and Post-Saccade Behavior: Dynamic and Glissadic Overshoot / Neural Network for the Saccade Controller
Category: Medical

Models Of Horizontal Eye Movements

Author : Alireza Ghahari
ISBN : 9781627055475
Genre : Technology & Engineering
File Size : 64.84 MB
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There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book series is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-conjugate eye movement allowing the eyes to track targets as they come closer or farther away. In Part 1, early models of saccades and smooth pursuit are presented. A number of oculomotor plant models are described therein beginning with the Westheimer model published in 1954, and up through our 1995 model involving a 4th-order oculomotor plant model. In Part 2, a 2009 version of a state-of-the-art model is presented for horizontal saccades that is 3rd-order and linear, and controlled by a physiologically based time-optimal neural network. In this book, a multiscale model of the saccade system is presented, focusing on the neural network. Chapter 1 summarizes a whole muscle model of the oculomotor plant based on the 2009 3rd-order and linear, and controlled by a physiologically based time-optimal neural network. Chapter 2 presents a neural network model of biophysical neurons in the midbrain for controlling oculomotor muscles during horizontal human saccades. To investigate horizontal saccade dynamics, a neural circuitry, including omnipause neuron, premotor excitatory and inhibitory burst neurons, long lead burst neuron, tonic neuron, interneuron, abducens nucleus, and oculomotor nucleus, is developed. A generic neuron model serves as the basis to match the characteristics of each type of neuron in the neural network. We wish to express our thanks to William Pruehsner for drawing many of the illustrations in this book.
Category: Technology & Engineering

Models Of Horizontal Eye Movements

Author : John D. Enderle
ISBN : 9781608452323
Genre : Medical
File Size : 23.42 MB
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There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-conjugate eye movement allowing the eyes to track targets as they come closer or farther away. In this book, early models of saccades and smooth pursuit are presented. The smooth pursuit system allows tracking of a slow moving target to maintain its position on the fovea. Models of the smooth pursuit have been developed using systems control theory, all involving a negative feedback control system that includes a time delay, controller and plant in the forward loop, with unity feedback. The oculomotor plant and saccade generator are the basic elements of the saccadic system. The oculomotor plant consists of three muscle pairs and the eyeball. A number of oculomotor plant models are described here beginning with the Westheimer model published in 1954, and up through our 1995 model involving a 4th order oculomotor plant model. The work presented here is not an exhaustive coverage of the field, but focused on the interests of the author. In Part II, a state-of-art model of the saccade system is presented, including a neural network that controls the system. Table of Contents: Introduction / Smooth Pursuit Models / Early Models of the Horizontal Saccadic Eye Movement System / Velocity and Acceleration Estimation / 1995 Linear Homeomorphic Saccadic Eye Movement Model
Category: Medical

Vestibular System Part 2 Psychophysics Applied Aspects And General Interpretations

Author : H.H. Kornhuber
ISBN : 3540068643
Genre : Psychology
File Size : 40.84 MB
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The function of the vestibular system is not as obvious as those of vision, hearing, touch or smell. Vestibular dysfunction, however, is clearly apparent where lesions are present. It is probably for this reason that the vestibular sense was not discovered until the nineteenth century and that clinicians have continued to playa major role in basic vestibular research right up to the present. The relationship between basic and clinical research is certainly stronger in the vesti bular field than in that of tactile sensation, for instance, as testified by the work of clinicians as MENIERE, BREUER, BARANY, DEKLEIJN and FRENZEL. In this respect the situation is similar in vestibular physiology and in endocrinology, and for the same reason. This second part of the vestibular volume of the Handbook of Sensory Physio logy will be of interest to neurologists, otologists, neurosurgeons, ophthalmologists and physiotherapists on the one hand, and psychologists, physiologists, engineers and aviation specialists on the other. For a full understanding of Part 2, it is necessary to have assimilated the basic anatomy, physiology, and biochemistry of Part 1.
Category: Psychology

The Neurobiology Of Saccadic Eye Movements

Author : Robert H. Wurtz
ISBN : UOM:39015018930399
Genre : Medical
File Size : 29.18 MB
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Saccadic eye movements shift the direction of the eye rapidly from one part of the visual field to another. The system within the brain controlling this eye movement is probably the best understood sensory motor system in the brain of primates. The Neurobiology of Saccadic Eye Movements presents a series of state-of-the-art reviews of this system including the behavior, neuronal mechanisms, and systems engineering characterization. The successful interaction of systems modelling with the neurophysiological approaches described in this book provide a potential blueprint for future study of more complicated systems within the brain.
Category: Medical

Ijcnn 93 Nagoya

Author : IEEE Neural Networks Council
ISBN : UCSD:31822016891236
Genre : Computers
File Size : 63.53 MB
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Category: Computers

The Neurology Of Eye Movements

Author : R. John Leigh
ISBN : UOM:39015064095733
Genre : Medical
File Size : 26.20 MB
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This new edition of Neurology of Eye Movements is a major revision providing clinicians with a synthesis of current and new scientific information that can be applied to the diagnosis and treatment of disorders of ocular motility. Basic scientists will also benefit from descriptions of how data from anatomic, electrophysiologic, pharmacologic, and imaging studies can be directly applied to the study of disease. By critically reviewing such basic studies, Drs. Leigh and Zee build a conceptual framework that can be applied to the interpretation of abnormal ocular motor behavior at the bedside. These syntheses are summarized in boxes, figures, schematics, and tables. Insights and techniques from current research, case examples, bedside and laboratory studies, and thousands of references are all available here from two leading clinician-scientists who have been studying eye movements for over a quarter century. The previous edition of Neurology of Eye Movements, Third Volume, established as acknowledged as a classic in the field, is now enhanced in this new edition by an accompanying DVD featuring the full text with links to 20 Video Displays that provide teaching slides ready for classroom presentation. Also on the DVD are 200 video clips, images, and the lectures notes Control Systems Applied to the Oculomotor System by David A. Robinson. For detailed information on using the DVD, visit http: //www.us.oup.com/us/pdf/0195300904DVD.pdf.
Category: Medical

Clinical Neurophysiology Of The Vestibular System

Author : Robert William Baloh
ISBN : UOM:39015002408956
Genre : Neurophysiologie
File Size : 38.58 MB
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The second edition of this well-received text is at least 50% larger than its predecessor, with most of the additional pages devoted to clinical diagnosis and treatment of a wide range of common neuro-otologic disorders. Algorithms and tables guide the practitioner confronted with a patient complaining of dizziness or related symptoms. Newer tests are discussed, and the chapter on the evaluation of hearing has been significantly expanded. The highly praised sections on basic neurophysiology reflect the latest research. This edition features 87 new illustrations including tables, diagnostic charts, and MRI and CT scans.
Category: Neurophysiologie

Signal And Sense

Author : Gerald M. Edelman
ISBN : UOM:39015021496735
Genre : Medical
File Size : 46.47 MB
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Here is a complete investigation of the correlation between brain cell mapping and nerve impulses. This informative text concentrates on how the structure and function of the nervous system allows perceptual categorization and learning to occur. Incorporating the latest theoretical and experimental approaches, it examines recognition of biologically significant stimuli in the environment; biological constraints in the fundamental process of categorization and generalization; development of patterns of anatomical and functional connectivity within the nervous system; varieties, locations and uses of mapped representations in the nervous system; interactions between sensory systems, and between sensory systems and motor systems in the control of movement; brain mechanisms in language and much more.
Category: Medical

Adaptive Mechanisms In Gaze Control

Author : A. Berthoz
ISBN : UOM:39015009566517
Genre : Medical
File Size : 71.52 MB
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The book will be an important addition for researchers and clinicians interested in the vestibular system, eye movements, motor systems in general, and central nervous system correlates of learning. Science Review Neuroscience Letters
Category: Medical

Ibz Kombinierte Folge

Author :
ISBN : MINN:31951001944952F
Genre : German periodicals
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Category: German periodicals

Embc 2004

Author : IEEE Engineering in Medicine and Biology Society. Conference
ISBN : PSU:000054719798
Genre : Biomedical engineering
File Size : 77.31 MB
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Category: Biomedical engineering