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Author: Francine J. Prokoski
Publisher:
ISBN:
Category : Vision
Languages : en
Pages : 362
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Author: Francine J. Prokoski
Publisher:
ISBN:
Category : Vision
Languages : en
Pages : 362
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Book Description
Author: Dennis F. Fisher
Publisher: Routledge
ISBN: 1315437392
Category : Psychology
Languages : en
Pages : 520
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Book Description
Originally published in 1981, this volume represents the edited proceedings of the third symposium on eye movements and behaviour sponsored by the US Army Human Engineering Laboratory. The conference, titled "The Last Whole Earth Eye Movement Conference" was held in Florida in February 1980. As the conference approached, seizure of the American hostages by the Iranian militants, the Russian invasion of Afghanistan, and the uncertain economic outlook around the world made it appear as though the title was a self-fulfilling prophecy. But the meeting proved highly successful and people throughout the world seemed to be adapting to the stresses of international tension, making the possibility of subsequent meetings more likely. The present volume is intended to serve as a complementary text to the earlier texts Eye Movements and Psychological Processes (Monty & Senders, 1976) and Eye Movements and the Higher Psychological Functions (Senders, Fisher & Monty, 1978), rather than a revision and update of them.
Author: W.H. Zangemeister
Publisher: Elsevier
ISBN: 0080545033
Category : Psychology
Languages : en
Pages : 413
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Book Description
The goal of this book is to put together some of the main interdisciplinary aspects that play a role in visual attention and cognition. The book is aimed at researchers and students with interdisciplinary interest. In the first chapter a general discussion of the influential scanpath theory and its implications for human and robot vision is presented. Subsequently, four characteristic aspects of the general theme are dealt with in topical chapters, each of which presents some of the different viewpoints of the various disciplines involved. They cover neuropsychology, clinical neuroscience, modeling, and applications. Each of the chapters opens with a synopsis tying together the individual contributions.
Author: Gerard Obrecht
Publisher: Springer Science & Business Media
ISBN: 1475721315
Category : Medical
Languages : en
Pages : 290
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Book Description
Seeing is life. Seeing is transfonning luminous col We wish to extend our academic and theoretical ored stimulations and shapes into amental represen knowledge and also to complete and exchange our tation, structured in space and in time. But seeing is technical and professional experience to prepare also opening onto the world that surrounds us: it is corrective means for the future. thus a means for communicating and learning. Numerous questions have yet to be answered, Jean-Jacques Rousseau, a philosopher worth such as: quoting during the bicentennial of the French Revo lution of which he was an instigator, stated, "of all • Will it one day be possible to defer or stop the the senses, vision is that wh ich can be the least aging of the accommodative apparatus? readily separated from judgments of the mind. " • Is further improvement of the current corrective Sight is increasingly called on in our modern means possible, whether spectacles or contact world. Maturity is affected at about 40-45 years by lenses? the on set of presbyopia. Atthat age, which demands • How are behavioral and psychological presbyope all our intellectual and physical means, our sight typologies to be integrated in the course of exam should be irreproachable. Our efficiency must not be ination, prescription, and fitting with corrective diminished.
Author: Vincent Dang
Publisher:
ISBN:
Category : Eye
Languages : en
Pages :
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Book Description
Oculomotor control is a subset of sensorimotor control that allows humans to make extremely accurate eye movements for ADL. Impairments to oculomotor control can increase the impact of sensorimotor control deficits, especially in neurodegenerative diseases such as MS. Here, a two-dimensional computational control system of saccades and smooth-pursuit eye movements was compiled from literature to systematically characterize oculomotor control in eight visually-healthy humans as a precursor to studying the relationship between oculomotor and sensorimotor control in patient populations. Subjects visually tracked a single dot on a 41 x 30.5 cm monitor in a dark room while eye positions were recorded at 60 Hz by a video based eye tracker. Data from visual tasks separately consisting of saccades and smooth-pursuit along the horizontal and/or vertical midlines were inputs to an error minimization algorithm that identified individually for each subject the parameters characterizing motor command generation and two-dimensional interactions within ocular dynamics, with bootstrap analysis quantifying the certainty of parameter estimates. Cross-correlation between target and subject gaze positions was used to identify neuronal conduction speeds for saccades and smooth-pursuit processing. A task consisting of small saccades identified the minimum position error required for saccade initiation. A final task combining saccade and smooth-pursuit movements was used to evaluate model performances. The model accounted for 96% and 98% of variability for subject saccade and smooth-pursuit eye movements, respectively. The 2-D model analysis of saccades and smooth-pursuit identified interactions between horizontal and vertical oculomotor control indicative of component stretching but did not verify the increased speed of vertical versus horizontal eye movements reported in literature. A novel interaction associated with centrifugal curvature was also identified, but the functional effects the interactions were small. Estimated latencies of saccade and smooth-pursuit processing of 242 and 107 ms, respectively, were within ranges provided by literature, while dead zone values for saccade initiation had a 97% error from values provided by literature. The quantitative framework presented in this study may be used in future studies that include MS patients, in which oculomotor control characterization may reveal differences in control strategies for goal-directed ocular movements relative to healthy individuals.
Author:
Publisher:
ISBN:
Category : Cybernetics
Languages : en
Pages : 650
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Author: Library of Congress. Copyright Office
Publisher: Copyright Office, Library of Congress
ISBN:
Category : Copyright
Languages : en
Pages : 1760
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Book Description
Author:
Publisher:
ISBN:
Category : Bioengineering
Languages : en
Pages : 650
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Book Description
Author: John Enderle
Publisher: Springer Nature
ISBN: 3031016432
Category : Technology & Engineering
Languages : en
Pages : 148
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Book Description
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
Author:
Publisher:
ISBN:
Category : Psychology
Languages : en
Pages : 418
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Book Description
