naa a22 4500 510777252 CHVBK 20180411083234.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.3758/s13428-013-0327-0 doi (NATIONALLICENCE)springer-10.3758/s13428-013-0327-0 Pupil diameter measurement errors as a function of gaze direction in corneal reflection eyetrackers [Elektronische Daten] [Julie Brisson, Marc Mainville, Dominique Mailloux, Christelle Beaulieu, Josette Serres, Sylvain Sirois] Pupil dilation is a useful, noninvasive technique for measuring the change in cognitive load. Since it is implicit and nonverbal, it is particularly useful with preverbal or nonverbal participants. In cognitive psychology, pupil dilation is most often measured by corneal reflection eye-tracking devices. The present study investigates the effect of gaze position on pupil size estimation by three common eye-tracking systems. The task consisted of a simple object pursuit situation, as a sphere rotated around the display screen. Systematic errors of pupil size estimation were found with all three systems. Implications for task-elicited pupillometry, especially for gaze-contingent studies such as object tracking or reading, are discussed. Psychonomic Society, Inc., 2013 Eye tracking nationallicence Pupillometry nationallicence Gaze tracking nationallicence Eye movements nationallicence Brisson Julie Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut Mainville Marc Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut Mailloux Dominique Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut Beaulieu Christelle Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut Serres Josette Université Paris Descartes- Sorbonne Cité, Laboratoire, Psychologie de la Perception - UMR 8158, Paris, France aut Sirois Sylvain Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1322-1331 45:4<1322 2013 45 13428 https://doi.org/10.3758/s13428-013-0327-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-013-0327-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brisson Julie Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut NATIONALLICENCE 700 1- Mainville Marc Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut NATIONALLICENCE 700 1- Mailloux Dominique Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut NATIONALLICENCE 700 1- Beaulieu Christelle Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut NATIONALLICENCE 700 1- Serres Josette Université Paris Descartes- Sorbonne Cité, Laboratoire, Psychologie de la Perception - UMR 8158, Paris, France aut NATIONALLICENCE 700 1- Sirois Sylvain Université du Québec à Trois-Rivières, Psychologie, Trois-Rivieres, QC, Canada aut NATIONALLICENCE 773 0- Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1322-1331 45:4<1322 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer