Spatial and/or temporal adjustments of scanning behavior to visibility changes |
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| Authors: | A M Jacobs J K O'Regan |
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| Affiliation: | 1. Department of Molecular Biology and Genetics, Faculty of Science, Ordu University, 52200-Ordu, Turkey;2. Department of Biology, Faculty of Science, Amasya University, 05100-Amasya, Turkey;1. Department of Electrical Engineering, Incheon National University, Incheon, South Korea;2. Department of Electrical Engineering, Myongji University, Yongin, South Korea;3. Department of Design and Creative Technologies, Auckland University of Technology, New Zealand;1. School of Geographic Sciences, Xinyang Normal University, Xinyang 464000, China;2. Henan Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution, Xinyang Normal University, Xinyang 464000, China;3. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;4. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China;5. School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China;1. Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA;2. Department of Chemical Engineering, University of Patras, Patras, Greece;3. Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH), Patras, Greece |
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| Abstract: | This paper continues a series of studies focussing on elementary processes controlling eye movements in visual search and reading. It investigates the question of how scanning behavior in a letter search task adjusts to changes in spatial visibility created by different visual factors, such as viewing distance, inter-letter spacing and target-background similarity. Each of the three visual factors is found to affect scanning behavior in a different way, either by changing its spatial parameter (saccade size) or its temporal (fixation duration), or both of them at the same time. Possible mechanisms underlying these effects are discussed. |
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