Klatt, Stefanie ORCID: 0000-0002-2477-8699, Noel, Benjamin and Brocher, Andreas (2021). Pupil size in the evaluation of static and dynamic stimuli in peripheral vision. PLoS One, 16 (5). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1932-6203

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It has been evidenced that in attention-window tasks, the participants fixate on the center of a screen while inspecting two stimuli that appear at the same time in parafoveal vision. Such tasks have successfully been used to estimate a person's breadth of attention under various conditions. While behavioral investigations of visual attention have often made use of response accuracy, recent research has shown that the pupil size can also be used to track shifts of attention to the periphery. The main finding of previous studies is that the harder the evaluation of the stimuli becomes, e.g., because they appear farther away from the central fixation point, the stronger the pupils dilate. In this paper, we present experimental data suggesting that in an attention-window task, the pupil size can also be used to assess whether the participants attend to static, non-moving, or dynamic, moving stimuli. That is, regression models containing information on presentation mode (static vs. dynamic) and the visual angle between spatially separated stimuli better predict accuracy of perception and pupil dilation than model without these sources of information. This finding is useful for researchers who aim at understanding the human attentional system, including potential differences in its sensitivity to static and dynamic objects.

Item Type: Journal Article
CreatorsEmailORCIDORCID Put Code
Klatt, StefanieUNSPECIFIEDorcid.org/0000-0002-2477-8699UNSPECIFIED
URN: urn:nbn:de:hbz:38-583266
DOI: 10.1371/journal.pone.0250027
Journal or Publication Title: PLoS One
Volume: 16
Number: 5
Date: 2021
Place of Publication: SAN FRANCISCO
ISSN: 1932-6203
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
ATTENTION; FOCUS; LOADMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/58326


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