Dynamic eye tracking based metrics for infant gaze patterns in the face-distractor competition paradigm

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorAhtola, Eero
dc.contributor.authorStjerna, Susanna
dc.contributor.authorYrttiaho, Santeri
dc.contributor.authorNelson, Charles A.
dc.contributor.authorLeppänen, Jukka M.
dc.contributor.authorVanhatalo, Sampsa
dc.contributor.departmentSchool services,SCI
dc.contributor.departmentUniversity of Helsinki
dc.contributor.departmentTampere University
dc.contributor.departmentHarvard University
dc.date.accessioned2017-10-15T20:55:12Z
dc.date.available2017-10-15T20:55:12Z
dc.date.issued2014-05-20
dc.description.abstractObjective: To develop new standardized eye tracking based measures and metrics for infants' gaze dynamics in the face-distractor competition paradigm. Method: Eye tracking data were collected from two samples of healthy 7-month-old (total n = 45), as well as one sample of 5-month-old infants (n = 22) in a paradigm with a picture of a face or a non-face pattern as a central stimulus, and a geometric shape as a lateral stimulus. The data were analyzed by using conventional measures of infants' initial disengagement from the central to the lateral stimulus (i.e., saccadic reaction time and probability) and, additionally, novel measures reflecting infants gaze dynamics after the initial disengagement (i.e., cumulative allocation of attention to the central vs. peripheral stimulus). Results: The results showed that the initial saccade away from the centrally presented stimulus is followed by a rapid re-engagement of attention with the central stimulus, leading to cumulative preference for the central stimulus overthe lateral stimulus over time. This pattern tended to be stronger for salient facial expressions as compared to non-face patterns, was replicable across two independent samples of 7-month-old infants, and differentiated between 7 and 5 month-old infants. Conclusion: The results suggest that eye tracking based assessments of infants' cumulative preference for faces over time can be readily parameterized and standardized, and may provide valuable techniques for future studies examining normative developmental changes in preference for social signals. Significance: Standardized measures of early developing face preferences may have potential to become surrogate biomarkers of neurocognitive and social development.en
dc.description.versionPeer revieweden
dc.format.extent1-11
dc.format.mimetypeapplication/pdf
dc.identifier.citationAhtola , E , Stjerna , S , Yrttiaho , S , Nelson , C A , Leppänen , J M & Vanhatalo , S 2014 , ' Dynamic eye tracking based metrics for infant gaze patterns in the face-distractor competition paradigm ' , PloS one , vol. 9 , no. 5 , e97299 , pp. 1-11 . https://doi.org/10.1371/journal.pone.0097299en
dc.identifier.doi10.1371/journal.pone.0097299
dc.identifier.issn1932-6203
dc.identifier.otherPURE UUID: bef0d4ad-1538-44eb-af30-8612cfb3c2cd
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/bef0d4ad-1538-44eb-af30-8612cfb3c2cd
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84901354750&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/14909376/10.1371_journal.pone.0097299.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/28289
dc.identifier.urnURN:NBN:fi:aalto-201710157149
dc.language.isoenen
dc.relation.ispartofseriesPLOS ONEen
dc.relation.ispartofseriesVolume 9, issue 5en
dc.rightsopenAccessen
dc.titleDynamic eye tracking based metrics for infant gaze patterns in the face-distractor competition paradigmen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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