Supplementary data for the paper 'Is accommodation a confounder in pupillometry research?'
doi:10.4121/13721038.v1
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doi: 10.4121/13721038
doi: 10.4121/13721038
Datacite citation style:
Kooijman, L. (Lars); Dodou, Dimitra; Jansen, Stefan; Themans, Tamir; Russell, Julia et. al. (2021): Supplementary data for the paper 'Is accommodation a confounder in pupillometry research?'. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/13721038.v1
Other citation styles (APA, Harvard, MLA, Vancouver, Chicago, IEEE) available at Datacite
Dataset
Much psychological research uses pupil diameter measurements for
investigating the cognitive and emotional effects of visual stimuli. A
potential problem is that accommodating at a nearby point constricts the pupil.
This study examined to what extent accommodation is a confounder in
pupillometry research. Participants solved multiplication problems at different
distances (Experiment 1) and looked at line drawings with different monocular
depth cues (Experiment 2) while their pupil diameter, refraction, and vergence
angle were recorded using a photorefractor. Experiment 1 showed that the pupils
dilated while performing the multiplications, for all presentation distances.
Pupillary constriction due to accommodation was not strong enough to override
pupil dilation due to cognitive load. Experiment 2 showed that monocular depth
cues caused a small shift in refraction in the expected direction. We conclude
that, for the young student sample we used, pupil diameter measurements are not
substantially affected by accommodation.
history
- 2021-02-12 first online, published, posted
publisher
4TU.ResearchData
associated peer-reviewed publication
Is accommodation a confounder in pupillometry research?
funding
- A replication study of ‘pupil size as related to interest value of visual stimuli’ (Hess & Polt, 1960) (grant code 401.16.083) [more info...] Dutch Research Council
organizations
Delft University of Technology, Faculty of Mechanical, Maritime and Materials Engineering
DATA
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