Prediction of intrinsic and extraneous cognitive load with oculometric and biometric indicators

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cris.lastimport.scopus2025-08-29T03:10:18Z
dc.abstract.enThis study focused on the prediction of intrinsic and extraneous cognitive load using eye-tracking metrics, heart rate variability, and galvanic skin response. Intrinsic cognitive load is associated with the inherent complexity of the mental task, whereas extraneous cognitive load is related to the distracting and unrelated elements in the task. Thirty-three participants (aged 21.24 ± 3.51) performed different levels of mental calculations to induce intrinsic cognitive load in the first task and a visual search task to manipulate extraneous cognitive load in the second task. During both tasks, participants’ eye movements, heart rate, and galvanic skin response were continuously recorded. Participants’ working memory was controlled. Subjective cognitive load was also assessed following each experimental task. A discriminant model, consisting of oculo- and bio-metric indicators, could discriminate between cognitive loads (intrinsic vs.extraneous) and levels (low vs.high). In particular, average fixation duration, average saccade amplitude, and K coefficient each have an impact on the model. In addition, task difficulty may be distinguished by the Low-High Index of Pupillary Activity (LHIPA) and heart rate variability.
dc.affiliationInstytut Psychologii
dc.affiliationWydział Psychologii w Warszawie
dc.contributor.authorEkin, Merve
dc.contributor.authorKrejtz, Krzysztof
dc.contributor.authorDuarto, Carlos
dc.contributor.authorDuchowski, Andrew T.
dc.contributor.authorKrejtz, Izabela
dc.date.access2025-02-12
dc.date.accessioned2025-03-26T08:48:51Z
dc.date.available2025-03-26T08:48:51Z
dc.date.created2025-02-04
dc.date.issued2025-02-12
dc.description.accesstimeat_publication
dc.description.physical1-14
dc.description.versionfinal_published
dc.description.volume15
dc.identifier.doi10.1038/s41598-025-89336-y
dc.identifier.issn2045-2322
dc.identifier.urihttps://share.swps.edu.pl/handle/swps/1379
dc.identifier.weblinkhttps://www.nature.com/articles/s41598-025-89336-y
dc.languageen
dc.pbn.affiliationpsychologia
dc.rightsCC-BY-NC-ND
dc.rights.questionYes_rights
dc.share.articleOPEN_JOURNAL
dc.subject.enIntrinsic cognitive load
dc.subject.enExtraneous cognitive load
dc.subject.enEye tracking
dc.subject.enBio-metric
dc.subject.enLinear discriminant analysis
dc.swps.sciencecloudsend
dc.titlePrediction of intrinsic and extraneous cognitive load with oculometric and biometric indicators
dc.title.journalScientific Reports
dc.typeJournalArticle
dspace.entity.typeArticle