Quantitative evaluation of optically induced disorientation.

Brecher, M. Herbert; Brecher, Gerhard A.

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Quantitative evaluation of optically induced disorientation.

1970-01-01
By Brecher, M. Herbert ; Brecher, Gerhard A.

[PDF-236.23 KB]

English

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Creators:

Brecher, M. Herbert ; Brecher, Gerhard A.

Brecher, M. Herbert ; Brecher, Gerhard A. Less -
Corporate Contributors:

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

[+]

Aircraft Accidents Air Pilots Air Transportation Crashes Depth Perception Distance Perception Experiments Eye Eye Fixations Eye Location Eye Movements Human Subject Testing Kinetics Motion Motion Perception Motor Ability--Testing Motor Reactions Motor Skills Optical Devices Perception Rotation Rotational Motion Speed Standard Deviation Standard Deviations Velocity Perception Vestibular Apparatus Vestibular Function Tests Visual Perception Walking
Publication/ Report Number:

AM 70-2 ; DOT/FAA/AM-70/2

AM 70-2 ; DOT/FAA/AM-70/2 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

The purpose of this study was to establish quantitatively and systematically the association between the speed of movement of an optical environment and the extent of disorientation experienced by an individual viewing this environment. The degree of disorientation was determined by measuring the angle by which an individual deviates from a straight path when he walks back and forth within a rotating optokinetic drum. The correlation between the speed of the moving optical environment and the amount of disorientation indicates that greater disorientation occurs when the optical environment moves faster.

However, as the environment moves with increasing velocities the objectively measurable degree of disorientation becomes relatively less. It appears that at faster movements of the optokinetic drum, the subjects become increasingly more cognizant of their disorientation and attempt to compensate for it. At velocities of less than 20 radians/min. most subjects are disoriented in their motor activity without being aware of it.
Format:

PDF
Collection(s):

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

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urn:sha256:383d0d2cefeafefbd0597859fbfc1964d8f365ed6f19fdc621e1bc128f4e9303
Download URL:

https://rosap.ntl.bts.gov/view/dot/20891/dot_20891_DS1.pdf
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Quantitative evaluation of optically induced disorientation.

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