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Models of horizontal eye movements. Part II, A 3rd order linear saccade model [electronic resource] / John D. Enderle, Wei Zhou.

Author/Creator:
Enderle, John D. (John Denis)
Publication:
San Rafael, Calif. (1537 Fourth Street, San Rafael, CA 94901 USA) : Morgan & Claypool, c2010.
Format/Description:
Book
1 electronic text (xii, 147 p. : ill.) : digital file
Series:
Synthesis digital library of engineering and computer science.
Synthesis lectures on biomedical engineering 1930-0336 ; # 35.
Synthesis lectures on biomedical engineering, 1930-0336 ; # 35
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Other Title:
3rd order linear saccade model.
Third order linear saccade model.
Subjects:
Eye -- Movements -- Mathematical models.
Saccadic eye movements -- Mathematical models.
System Details:
Mode of access: World Wide Web.
Summary:
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.
Contents:
1. 2009 linear homeomorphic saccadic eye movement model and post-saccade behavior: dynamic and glissadic overshoot
Introduction
Oculomotor plant
Derivation of the differential equation describing the oculomotor system
Neural input
Saccade response
Parameter estimation and system identification
System identification
Numerical gradient
Velocity and acceleration estimation
Inverse filter
Initial parameter estimation for humans
Estimation of the start time and duration of a saccade
Estimation of model parameters
Estimation of parameters for the agonist muscle
Estimation of parameters for antagonist muscle
Corrections
Implementation
Initial parameter estimation for monkey
Static conditions
Force-velocity characteristics
Oculomotor plant parameters
Monkey data and results
Human data and results
Post-inhibitory rebound burst and post saccade phenomena
Time-optimal controller

2. Neural network for the saccade controller
Introduction
Neural network
Paramedian Pontine reticular formation
Hodgkin-Huxley model of an EBN
Components of the burst
Post inhibitory rebound burst firing
Superior colliculus
SC sequence of activity in the generation of a saccade
Superior colliculus model of the moving hill
Cerebellum
Cerebellar structure
Cerebellar control of saccades
Role of fastigial nucleus
Cerebellar saccade model
Saccades and neural activity
Time optimal control of saccades

Bibliography
Authors' biographies.
Notes:
Part of: Synthesis digital library of engineering and computer science.
Title from PDF t.p. (viewed on May 4, 2010).
Series from website.
Includes bibliographical references (p. 133-145).
Contributor:
Zhou, Wei.
ISBN:
9781608454471 (electronic bk.)
9781608454464 (pbk.)
Publisher Number:
10.2200/S00264ED1V01Y201003BME035 doi
Access Restriction:
Restricted for use by site license.