Adaptation to vestibular disorientation. IX, Influence of head position on the habituation of vertical nystagmus.

Collins, William E.; United States. Office of Aviation Medicine

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Adaptation to vestibular disorientation. IX, Influence of head position on the habituation of vertical nystagmus.

1968-03-01
By Collins, William E.

[PDF-381.02 KB]

English

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Creators:

Collins, William E.
Corporate Creators:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Acceleration (Mechanics) Adaptation (Psychology) Air Pilots Angular Acceleration Cats Cats As Laboratory Animals Depth Perception Distance Perception Ear Electrodes Experiments Eye Eye Fixations Eye Location Eye Movements Habituation (Neuropsychology) Laboratory Animals Motion Nystagmus Otoliths Rotation Rotational Motion Speed Velocity Vestibular Apparatus Vestibular Function Tests Vision Vision--Testing Vision Tests Visual Perception
Publication/ Report Number:

AM 68-2 ; DOT/FAA/AM-68/02

AM 68-2 ; DOT/FAA/AM-68/02 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

Interactions of linear and angular accelerations are frequently experienced by pilots during aircraft maneuvers. Several recent studies have indicated that the otoliths (detectors of linear acceleration) may influence responses of the semicircular canals (detectors of angular acceleration). To obtain some clearer evidence of such possible effects, a laboratory situation was designed to provide a minimally complex test of otolith-semicircular canal interactions.

Because cats show very rapid habituation (reduction) of the eye-movement response (nystagmus) to rotatory stimulation, eight such animals were repeatedly stimulated by angular accelerations. For all habituation trials, the saggital plane of the head and body of each animal was in the plane of rotation. A clear reduction of vertical nystagmus was obtained. By changing the position of the animals 180 deg. after the adaptation trials, the same set of semicircular canals was stimulated but the orientation of the otoliths was changed. Habituation was specific to the practiced direction of nystagmus and to the practiced head (otolith) position.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

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urn:sha256:a180d36bc6a155021b4b7c92f32380f17c6b8207be9f2e350ef37fb9ea14d5b9
Download URL:

https://rosap.ntl.bts.gov/view/dot/20840/dot_20840_DS1.pdf
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Adaptation to vestibular disorientation. IX, Influence of head position on the habituation of vertical nystagmus.

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