Adaptation to vestibular disorientation. VII, Special effects of brief periods of visual fixation on nystagmus and sensations of turning.

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

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Adaptation to vestibular disorientation. VII, Special effects of brief periods of visual fixation on nystagmus and sensations of turning.

1967-05-01
By Collins, William E.

[PDF-758.01 KB]

English

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Details:

Creators:

Collins, William E.
Corporate Creators:

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

[+]

Acceleration (Mechanics) Adaptation (Psychology) Alertness Angular Acceleration Deceleration Depth Perception Distance Perception Electrodes Experiments Eye Eye Fixations Eye Location Eye Movements Figure Skaters Habituation (Neuropsychology) Human Subject Testing Lighting Motion Motion Perception Night Vision Nystagmus Rotation Rotational Motion Speed Time Duration Velocity Vestibular Apparatus Vestibular Function Tests Vision Vision--Testing Vision Tests Visual Perception
Publication/ Report Number:

AM 67-12 ; DOT/FAA/AM-67/12

AM 67-12 ; DOT/FAA/AM-67/12 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

The influences of (a) disorientation experience and (b) brief periods of visual still-fixation were examined in exposing figure skaters and ordinary subjects to various rates of angular acceleration. Both nystagmic eye movements and sensations of turning were recorded. Skaters produced significantly less primary slow-phase eye displacement than did non-skaters, but the groups did not differ in number of eye movements nor in duration of nystagmus. Introduction of the visual still-fixation period significantly shortened primary nystagmus and produced an accentuated secondary nystagmus for both groups.

The term 'habituation' (a 'dropping out' of responses), used to define the effects of repeated vestibular stimulation, does not appear to describe completely the active process of change evidenced in the nystagmic tracings presented in this and other studies. Durations of turning sensations were shorter for skaters than for non-skaters.

For both groups the period of room illumination, allowing subjects actively to fixate on stationary visual objects, significantly shortened or abruptly terminated the subjective reaction.
Format:

PDF
Collection(s):

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

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urn:sha256:c4b657d8e59455a1a7c6dc5da4d1e35c7d30080163568a97d7ee8052c0b4b033
Download URL:

https://rosap.ntl.bts.gov/view/dot/20825/dot_20825_DS1.pdf
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Adaptation to vestibular disorientation. VII, Special effects of brief periods of visual fixation on nystagmus and sensations of turning.

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