Download or read book The Effect of Water Immersion on Perception of the Oculogravic Illusion in Normal and Labyrinthine defective Subjects written by Ashton Graybiel and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The separate and combined influences of otolith and nonotolith sensory inputs upon perception of the oculogravic illusion were investigated by maniuplating the visual and gravitoinertial force environments. By comparing the visually perceived direction of space by four naval aviators and four deaf persons with bilateral labyrinthine defects when dry and when immersed in water up to neck level, the contributions of (1) field force receptors in the vestibular organs and (2) nonvestibular proprioceptors stimulated by external contact support could be differentiated. Under these various conditions it was found that in normal persons, the vestibular contribution is predictable in terms of the direction of the gravitoinertial force vector but that the nonvestibular contribution varies; it may be relatively great or small. In persons with bilateral labyrinthine defects a nonvestibular contribution was always present but there was great individual variance. The significance of the findings in terms of tests measuring the function of the otolith organs is discussed. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1968 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vestibular System Part 2 Psychophysics Applied Aspects and General Interpretations written by H.H. Kornhuber and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Medical News Letter written by and published by . This book was released on 1969 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Gravitoinertial Force Upon Ocular Counterrolling written by Earl F. Miller (II) and published by . This book was released on 1970 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect in terms of magnitude of ocular counterrolling of g- loading at various angles of tilt up to 63 degrees was measured on normal subjects and compared with the effect upon persons with severe or complete loss of otolith function. The group of six normal subjects manifested a compensatory eye roll which increased as a direct and essentially linear function of the component of the gravitoinertial force acting laterally upon the subject. This increase in response was not observed in the five deaf subjects with severe or complete bilateral loss of their vestibular organs. These findings confirmed similar results found by other authors using other measuring techniques which show that the reflex eye movement is dependent upon and limited to the magnitude of the gravitoinertial stimulus (within the range used) when the otolitho-ocular system is functioning normally. However, when this function is impaired or lost, the magnitude of the compensatory eye roll is limited to that manifested at 1 g and possibly to non-otolithic contributions. These findings offer means for differentiation between otolithic defective individuals and 'normal' persons who exhibit little counterrolling.
Download or read book Spatial Orientation written by Hermann Schone and published by Princeton University Press. This book was released on 2014-07-14 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This major study of animal orientation in space launches the Princeton Series in Neurobiology and Behavior. Bringing together for the first time the important work done on spatial orientation over the past twenty-five years, and reviewing research up to and including recent attempts to apply the methods of cybernetics, Hermann Schone discusses the most significant concepts in the control of position and movement in space. Originally published in 1984. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book Ocular Motor and Vestibular Function in Neurometabolic Neurogenetic and Neurodegenerative Disorders written by Aasef G. Shaikh and published by Frontiers Media SA. This book was released on 2018-08-29 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eye movements provide rich source of information about brain functioning for neurologists and neuroscientists. They provide diagnostic clues, define, and localize motor and cognitive disorders. Objective eye movement assessments associated with clinical observation and genetic testing in neurodegenerative, neurometabolic, and neurogenetic diseases provide insight into their pathophysiology and disease mechanism. Finally the eye movements may be used for testing and following the response to therapies. The concrete value of studying eye movement stems from a number of advantages compared to the study of movements of axial or limb muscles. The eye movements are accessible to clinical inspection, they can be measured precisely, their interpretation is clear and therefore ocular motility examination has high localization value. There are several standardized tasks to study of each subclass of eye movements that are recognized for motor or cognitive behavior. Indeed the studies of eye movement had allowed test of motor and cognitive functions of the brain in a vast range of neurological disease. Both cortical and subcortical dysfunctions may be detected with the analysis of subclasses of eye movements and interpreted in association with other clinical, laboratory and neuroimaging features. The goal of this topic-focused volume of Frontiers in Neurology is to gather seminal studies, from well-known scientists and laboratories from across the world, delineating the features of eye movements and vestibular system in neurogenetic, neurometabolic, and neurodegenerative disorders. Such collection of articles, to our knowledge, is unique and never done in the past. The topics and the compilation will be of interest to broad groups of neuroscientists and neurologists for the reasons as follows: 1) Neurodegenerative diseases represent a large portion of neurological diseases encountered in neurological clinical practice. Eye movement changes may occur early in their course and may be specific, thus orienting the diagnosis. 2) Neurometabolic and neurogenetic conditions, although rare, show specific and characteristic eye movements that represent the hallmark of the disease. Such disorders often represent a pathologic model that helps to understand the normal functioning of specific brain regions and networks.
Download or read book Reports written by Naval School of Aviation Medicine (U.S.) and published by . This book was released on 1969 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1968 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transactions of the American Otological Society written by American Otological Society and published by . This book was released on 1968 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vestibular System written by H. H. Kornhuber and published by Springer. This book was released on 1974 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioastronautics Data Book written by James Fletcher Parker and published by . This book was released on 1973 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vestibular System Psychophysics applied aspects and general interpretations written by H. H. Kornhuber and published by . This book was released on 1974 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundations of Space Biology and Medicine bk 1 2 Ecological and physiological bases of space biology and medicine written by and published by . This book was released on 1975 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocular Counterrolling Measured During Eight Hours of Sustained Body Tilt written by Earl F. Miller II and published by . This book was released on 1972 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Creative and Successful Personalities written by Helen Margaret Jackson and published by . This book was released on 1972 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compendium of Human Responses to the Aerospace Environment written by Lovelace Foundation for Medical Education and Research and published by . This book was released on 1968 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
