Comparison of Tracking Task Performance and Nystagmus During Sinusoidal Oscillation in Yaw and Pitch PDF Download
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Author: Alan J. Benson
Publisher:
ISBN:
Category : Nystagmus
Languages : en
Pages : 32
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Book Description
Author: Alan J. Benson
Publisher:
ISBN:
Category : Nystagmus
Languages : en
Pages : 32
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Book Description
The problem was to compare performance limits and nystagmus induced by angular accelerations about the pitch and the yaw axes. Sinusoidal torsional oscillation degraded subjects' performance of a compensatory tracking task because inappropriate nystagmic eye movements impaired visibility of the display. Responses to angular oscillation in yaw and pitch were compared. During angular motion in the pitch-forward direction the nystagmus frequency and slow phase velocity, and the consequent performance decrement, were significantly greater than during the pitch-back half cycle. No such asymmetry was found during oscillation in yaw where the nystagmus measures and error scores were similar to those obtained in the pitch-back half cycle. The poorer suppression of vestibular nystagmus during pitch-forward motion is attributed to the higher frequency and smaller amplitude of downbeating nystagmus. Angular oscillation in pitch induced motion sickness more rapidly than a comparable yaw- axis stimulus. This was probably caused by differences in the dynamic response of vertical and lateral canals and the greater mismatch of canal and gravireceptor signals during oscillation in pitch.
Author: Fred E. Guedry
Publisher:
ISBN:
Category : Ear canal
Languages : en
Pages : 28
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Book Description
Author: Richard D Gilson
Publisher:
ISBN:
Category : Nystagmus
Languages : en
Pages : 28
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Book Description
Loss of acuity for visual details in aircraft during unusual maneuvers has been documented. Recent investigations of this problem have served to define the magnitude of semicircular canal stimulation necessary to produce nystagmus of sufficient strength to degrade visual acuity. Present work extends former observations by investigating the effects of levels of illumination during semicircular canal stimulation on the performance of a task requiring vision. The illumination levels were selected to encompass the range used in aircraft cockpits. A compensatory tracking task with an aircraft instrument as the display provided an indirect measure of this loss of visual acuity and a direct practical measure of performance. (Author).
Author:
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ISBN:
Category : Technology
Languages : en
Pages : 222
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 982
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Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1008
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Book Description
First multi-year cumulation covers six years: 1965-70.
Author:
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ISBN:
Category : Medicine
Languages : en
Pages : 1252
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1036
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Author: A. Berthoz
Publisher:
ISBN: 9780195068207
Category : Afferent pathways
Languages : en
Pages : 798
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Book Description
This is the most comprehensive and up-to-date account of the control of vertebrate head movements and its biomechanical and neural basis. It covers the entire spectrum of research on head-neck movements, ranging from the global description and analysis of a particular behavior to its underlying mechanisms at the level of neurotransmitter release and membrane biophysics.
