Maximizing valid eye tracking data in human and macaque infants by optimizing calibration and adjusting areas of interest

Zeng, G., Simpson, E.A. and Paukner, A. ORCID: 0000-0002-3421-1864, 2023. Maximizing valid eye tracking data in human and macaque infants by optimizing calibration and adjusting areas of interest. Behavior Research Methods. ISSN 1554-351X

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Remote eye tracking with automated corneal reflection provides insights into the emergence and development of cognitive, social, and emotional functions in human infants and non-human primates. However, because most eye tracking systems were designed for use in human adults, the accuracy of eye tracking data collected in other populations is unclear, as are potential approaches to minimize measurement error. For instance, data quality may differ across species or ages, which are necessary considerations for comparative and developmental studies. Here we examined how the calibration method and adjustments to areas of interest (AOIs) of the Tobii TX300 changed the mapping of fixations to AOIs in a cross-species longitudinal study. We tested humans (N=119) at 2, 4, 6, 8, and 14 months of age and macaques (Macaca mulatta; N=21) at 2 weeks, 3 weeks, and 6 months of age. In all groups we found improvement in the proportion of AOI hits detected as the number of successful calibration points increased, suggesting calibration approaches with more points may be advantageous. Spatially enlarging and temporally prolonging AOIs increased the number of fixation-AOI mappings, suggesting improvements in capturing infants’ gaze behaviors; however, these benefits varied across age groups and species, suggesting different parameters may be ideal, depending on the population studied. In sum, to maximize usable sessions and minimize measurement error, eye tracking data collection and extraction approaches may need adjustments for the age groups and species studied. Doing so may make it easier to standardize and replicate eye tracking research findings.

Item Type: Journal article
Publication Title: Behavior Research Methods
Creators: Zeng, G., Simpson, E.A. and Paukner, A.
Publisher: Springer (part of Springer Nature)
Date: 8 March 2023
ISSN: 1554-351X
Divisions: Schools > School of Social Sciences
Record created by: Jonathan Gallacher
Date Added: 11 Jan 2023 15:17
Last Modified: 08 Mar 2024 03:00

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