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Publication AbstractsVisual localization within single geometric planes of a space habitat.Tafforin C, Campan R, Imbert C.Aviat Space Environ Med 1997; 68:192-8 AbstractBackground: The present study investigated how human subjects capture and restore visual information within a line representation drawing the three-dimensional configuration of a space module. Methods: Nine subjects were asked to perform a visual localization task within this geometric model. The task consisted of localizing a light point appearing during 3 s in 40 different spatial positions and for 8 tilt angles of the model in the following random order: 0°, 45°, 180°, 225 , 90°, 315°, 135°, and 270°. Results: Results showed symmetric variations of the point-localizing errors about 180 of tilt angle (vertical orientation) and a decrease of the errors when the points occurred in the distal, then in the median and in the proximal planes (virtual depth). The performance also varied according to the virtual ceiling, floor right, left and back planes. The results have been discussed using a three-dimensional space representation based on a conservative mode of spatial information up to 90° of tilt (horizontal orientation), and on a transformation mode beyond 90° of tilt. Conclusion: We conclude that the visual localization in single geometric planes is orientation-dependent.
Information on subscribing, and on obtaining copies of an article or of an entire issue. Table of Contents for Volume 68, Number 3 of the ASEM journal.
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