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Alteration of the useful visual field as a function of state of vigilance in simulated car driving
Affiliation:1. Departamento de Informática, Escuela Técnica Superior de Ingeniería Informática, Universidad de Valladolid, Campus Miguel Delibes, Paseo de Belén, 15, 47011 Valladolid, Spain;2. Castilla and León Public Health Service (SACYL), Valladolid, Spain;1. Dept. Mathematics and Statistics, P.O. Box 35 (MaD), FI-40014, University of Jyväskylä, Finland;2. Dept. Mathematics and System Analysis, P.O. Box 11100, FI-00076, Aalto University, Finland;1. Center for Ecological Research, Kyoto University, 2-509-3 Hirano, Otsu, Shiga 520-2113, Japan;2. Climate Impact Research Centre, Umeå University, 981-07, Abisko, Sweden;3. Soil Ecology Research Group, Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Yokohama, Kanagawa 240-8501, Japan;4. Nakagawa Experimental Forest, Field Science Center for Northern Biosphere, Hokkaido University, Otoineppu 098-2501, Japan;5. Atmosphere and Ocean Research Institute (AORI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan
Abstract:The size of the useful visual field varies under the effect of different variables. Recent research has shown that the useful visual field deteriorates when the individual carries out a monotonous and prolonged monitoring task that leads to drowsiness. The aim of this study was to establish if the visual field also deteriorates during simulated car driving when this may induce a decrease in the level of alertness. Eighteen subjects had to follow another vehicle for 2 h while simultaneously carrying out a colour discrimination task in central vision and a detection task of a peripheral target that could appear anywhere in the road scene. The analysis of the data indicated that the useful visual field deteriorates with the prolongation of the monotonous driving task according to a tunnel vision-like phenomenon.
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