Email this article SIMULATION OF WEIGHTLESSNESS AND ASSESSMENT OF ITS INFLUENCE ON VISUAL PERFORMANCE
- Authors: Dmitriyeva SV1, Gracheva MA2, Vasil’eva NN2, Smoleevskiy AE1, Man’ko OM1
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Affiliations:
- Institute of biomedical problems of the Russian academy of sciences
- A. A. Kharkevich Institute of problems of information transfer of the Russian academy of sciences
- Issue: Vol 37, No 2 (2018)
- Pages: 97-102
- Section: Articles
- URL: https://journal-vniispk.ru/RMMArep/article/view/14202
- DOI: https://doi.org/10.17816/rmmar14202
- ID: 14202
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Abstract
Objective: to assess the influence of weightlessness on visual performance. Materials and methods. The subjects were 10 men from 21 to 43 y. o. All subjects spend 5 days in conditions of microgravity (simulation of weightlessness). To create microgravity conditions, a dry immersion technique was used: the subjects were immersed in a bath of warm water, being separated from the water by a freely floating waterproof elastic film. The characteristics of visual performance were assessed by means of interactive computer program. The subject’s task was to find an object, identical to the target shown at the display center, among several surrounding groups of similar objects. In each series, 3 types of operating conditions were used differing by the degree of crowding: the surrounding objects, among which it was necessary to detect the sought-for object, were presented singly, in groups of 4 objects and in groups of 7 objects. The sizes of the objects varied. Search time and number of identification errors were used to characterize visual performance. Results. Preliminary quantitative assessment of the influence of various factors on the dynamics of visual performance was carried out. The analysis of the data obtained has shown that the following factors could influence visual search performance of the subjects: the transition from “office” testing conditions to immersion conditions and back; learning - development of the skill of working with the program; the sizes of objects; degree of crowding. Conclusions. As a result of the experiment conducted, it was found that, in the case of rather complicated visual tasks (for example, searching for small target in groups), the transition from normal working conditions to immersion conditions led to an increase in the time for the task solving, i. e. to a decrease in visual performance. When analyzing data, it is necessary to take into account the effects of adaptation and learning, whose contribution depends on the parameters of the objects and the operating conditions (2 figs, bibliography: 11 refs).
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##article.viewOnOriginalSite##About the authors
S V Dmitriyeva
Institute of biomedical problems of the Russian academy of sciencesMoscow, Russia
M A Gracheva
A. A. Kharkevich Institute of problems of information transfer of the Russian academy of sciencesMoscow, Russia
N N Vasil’eva
A. A. Kharkevich Institute of problems of information transfer of the Russian academy of sciencesMoscow, Russia
A E Smoleevskiy
Institute of biomedical problems of the Russian academy of sciencesMoscow, Russia
O M Man’ko
Institute of biomedical problems of the Russian academy of sciencesMoscow, Russia
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