How to improve data quality in dog eye tracking

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How to improve data quality in dog eye tracking

Park, Soon Young (author): Medical University of Vienna,University of Vienna,University of Veterinary Medicine Vienna

Holmqvist, Kenneth (author): Nicolaus Copernicus University,University of Regensburg,University of the Free State

Niehorster, Diederick C (author): Lund University,Lunds universitet,Humanistlaboratoriet,Fakultetsgemensamma verksamheter,Humanistiska och teologiska fakulteterna,Institutionen för psykologi,Samhällsvetenskapliga institutioner och centrumbildningar,Samhällsvetenskapliga fakulteten,Lund University Humanities Lab,Units,Joint Faculties of Humanities and Theology,Department of Psychology,Departments of Administrative, Economic and Social Sciences,Faculty of Social Sciences

Huber, Ludwig (author): Medical University of Vienna,University of Vienna,University of Veterinary Medicine Vienna

Virányi, Zsófia (author): University of Veterinary Medicine Vienna,University of Vienna,Medical University of Vienna

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(creator_code:org_t)

2022-06-09
2023
English 24 s.
In: Behavior Research Methods. - : Springer Science and Business Media LLC. - 1554-3528. ; 55:4, s. 1513-1536

Related links:: http://dx.doi.org/10... (free); show more...; https://lup.lub.lu.s...; https://doi.org/10.3...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Pupil-corneal reflection (P-CR) eye tracking has gained a prominent role in studying dog visual cognition, despite methodological challenges that often lead to lower-quality data than when recording from humans. In the current study, we investigated if and how the morphology of dogs might interfere with tracking of P-CR systems, and to what extent such interference, possibly in combination with dog-unique eye-movement characteristics, may undermine data quality and affect eye-movement classification when processed through algorithms. For this aim, we have conducted an eye-tracking experiment with dogs and humans, and investigated incidences of tracking interference, compared how they blinked, and examined how differential quality of dog and human data affected the detection and classification of eye-movement events. Our results show that the morphology of dogs' face and eye can interfere with tracking methods of the systems, and dogs blink less often but their blinks are longer. Importantly, the lower quality of dog data lead to larger differences in how two different event detection algorithms classified fixations, indicating that the results of key dependent variables are more susceptible to choice of algorithm in dog than human data. Further, two measures of the Nyström & Holmqvist (Behavior Research Methods, 42(4), 188-204, 2010) algorithm showed that dog fixations are less stable and dog data have more trials with extreme levels of noise. Our findings call for analyses better adjusted to the characteristics of dog eye-tracking data, and our recommendations help future dog eye-tracking studies acquire quality data to enable robust comparisons of visual cognition between dogs and humans.

Subject headings

SAMHÄLLSVETENSKAP -- Psykologi (hsv//swe)
SOCIAL SCIENCES -- Psychology (hsv//eng)
NATURVETENSKAP -- Data- och informationsvetenskap -- Annan data- och informationsvetenskap (hsv//swe)
NATURAL SCIENCES -- Computer and Information Sciences -- Other Computer and Information Science (hsv//eng)
NATURVETENSKAP -- Data- och informationsvetenskap -- Datorseende och robotik (hsv//swe)
NATURAL SCIENCES -- Computer and Information Sciences -- Computer Vision and Robotics (hsv//eng)
NATURVETENSKAP -- Biologi -- Etologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Behavioural Sciences Biology (hsv//eng)
NATURVETENSKAP -- Data- och informationsvetenskap -- Bioinformatik (hsv//swe)
NATURAL SCIENCES -- Computer and Information Sciences -- Bioinformatics (hsv//eng)

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By the author/editor: Park, Soon Young; Holmqvist, Kenne ...; Niehorster, Died ...; Huber, Ludwig; Virányi, Zsófia

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SOCIAL SCIENCES: SOCIAL SCIENCES; and Psychology

NATURAL SCIENCES: NATURAL SCIENCES; and Computer and Inf ...; and Other Computer a ...

NATURAL SCIENCES: NATURAL SCIENCES; and Computer and Inf ...; and Computer Vision ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Behavioural Scie ...

NATURAL SCIENCES: NATURAL SCIENCES; and Computer and Inf ...; and Bioinformatics

Articles in the publication: Behavior Researc ...

By the university: Lund University

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