The Effect of Semicircular Canal Stimulation During Tilting on the Subsequent Perception of the Visual Vertical PDF Download
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Author: Charles W. Stockwell Publisher: ISBN: Category : Otolith organs Languages : en Pages : 20
Book Description
When a man is accelerated on a centrifuge, the direction of gravitoinertial vertical changes relative to his body. However, a lag occurs in his perception of this change. The hypothesis has been advanced that the perceptual lag in this situation is partly the result of a conflict between signals arising from the semicircular canals and from the otolith organs. To test this hypothesis, subjects were tilted in such a way that they received consistent semicircular canal and otolith signals. This was accomplished simply by tilting them 30 deg from upright in their frontal plane. Immediately after being tilted, these subjects made estimates of the vertical which were approximately accurate, and they continued to make accurate estimates throughout a 140-sec judgment period. The absence of a perceptual lag under these circumstances supports the hypothesis. (Author).
Author: Charles W. Stockwell Publisher: ISBN: Category : Otolith organs Languages : en Pages : 20
Book Description
When a man is accelerated on a centrifuge, the direction of gravitoinertial vertical changes relative to his body. However, a lag occurs in his perception of this change. The hypothesis has been advanced that the perceptual lag in this situation is partly the result of a conflict between signals arising from the semicircular canals and from the otolith organs. To test this hypothesis, subjects were tilted in such a way that they received consistent semicircular canal and otolith signals. This was accomplished simply by tilting them 30 deg from upright in their frontal plane. Immediately after being tilted, these subjects made estimates of the vertical which were approximately accurate, and they continued to make accurate estimates throughout a 140-sec judgment period. The absence of a perceptual lag under these circumstances supports the hypothesis. (Author).
Author: Laurence Harris Publisher: Springer Science & Business Media ISBN: 0387226737 Category : Medical Languages : en Pages : 444
Book Description
In this book the authors relate and discuss the idea that perceptual processes can be considered at many levels. A phenomenon that appears at one level may not be the same as a superficially similar phenomenon that appears at a different level. For example "induced motion" can be analyzed in terms of eye movements or at the retinal level or at a much higher cognitive level: how do these analyses fit together? The concept of levels also makes us think of the flow of information between levels, which leads to a consideration of the roles of top-down and bottom-up (or feed-forward, feed-back) flow. There are sections devoted to vestibular processing, eye movement processing and processing during brightness perception. The final section covers levels of processing in spatial vision. All scientists and graduate students working in vision will be interested in this book as well as people involved in using visual processes in computer animations, display design or the sensory systems of machines.
Author: H.H. Kornhuber Publisher: Springer Science & Business Media ISBN: 3642659209 Category : Psychology Languages : en Pages : 686
Book Description
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.
Author: Hubert Misslich Publisher: Routledge ISBN: 1351408143 Category : Medical Languages : en Pages : 484
Book Description
The 19th-century pioneers of motor physiology — Helmholtz, Hering, Fick and others — used the mathematics of motion, known as kinematics, to describe the laws of human movement and to deduce the neural control principles underlying these laws. After long neglect — partly due to limitations in stimulation and recording techniques — the kinematic approach is now resurging, fortified with modern computers and electrophysiology. New developments in recording techniques, as well as an improved understanding of the complex control properties of three-dimensional movements, have led to a flood of new research in this area. The classical laws of Donders and Listing have been confirmed and generalized, and computer simulations of the neural control of three-dimensional movement have been developed and tested. In this book, some of the world's leading scientists of motor control discuss how the brain represents and transforms the kinematic variables of movement. Background chapters explain the basic concepts — non-commutativity, redundancy and the classical laws — and their application to normal function and motor disorders, and shorter articles describe current research. The contributions are based on presentations at a symposium held in Tubingen in August 1995. The wide scope of the book should enable researchers to gain an overview of current research, but should also help newcomers to the field to get a good understanding of the questions and problems involved in three-dimensional movement control.
Author: M Fetter Publisher: CRC Press ISBN: 9789057021480 Category : Medical Languages : en Pages : 486
Book Description
The 19th century pioneers of motor physiology - Helmholtz, Hering, Fick and others - used the mathematics of motion, known as kinematics, to describe the laws of human movement and to deduce the neural control principles underlying these laws. After long neglect - partly due to limitations in stimulation and recording techniques - the kinematic approach is now resurging, fortified with modern computers and electrophysiology. New developments in recording techniques, as well as an improved understanding of the complex control properties of three-dimensional movements, have led to a flood of new research in this area. The classical laws of Donders and Listing have been confirmed and generalized, and computer simulations of the neural control of three-dimensional movement have been developed and tested. In this book, some of the world's leading scientists of motor control discuss how the brain represents and tranforms the kinematic variables of movement. Background chapters explain the basic concepts - non-commutativity, redundancy and the classical laws - and their application to normal function and motor disorders, and shorter articles describe current research. The contributions are based on presentations at a symposium held in Tübingen in August 1995. The wide scope of the book should enable researchers to gain an overview of current research, but should also help newcomers tot he field to get a good understanding of the questions and problems involved in three-dimensional movement control.
Author: Charles W. Stockwell
Author: Charles W. Stockwell
Author: United States. Army Medical Research and Development Command
Author: Laurence Harris
Author: Fred H. Previc
Author: H.H. Kornhuber
Author: 
Author: 
Author: Máximo Valentinuzzi
Author: Hubert Misslich
Author: M Fetter