Exploring the Relationship Between Eye Movements and Electrocardiogram Interpretation Accuracy

Alan Davies, Gavin Brown, Markel Vigo, Simon Harper, Laura Horseman, Bruno Splendiani, Elspeth J R Hill, Caroline Jay

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Interpretation of electrocardiograms (ECGs) is a complex task involving visual inspection. This paper aims to improve understanding of how practitioners perceive ECGs, and determine whether visual behaviour can indicate differences in interpretation accuracy. A group of healthcare practitioners (n=31) who interpret ECGs as part of their clinical role were shown 11 commonly encountered ECGs on a computer screen. The participants’ eye movement data were recorded as they viewed the ECGs and attempted interpretation. The Jensen-Shannon distance was computed for the distance between two Markov chains, constructed from the transition matrices (visual shifts from and to ECG leads) of the correct and incorrect interpretation groups for each ECG. A permutation test was then used to compare this distance against 10,000 randomly shuffled groups made up of the same participants. The results demonstrated a statistically significant (a 6 :05) result in 5 of the 11 stimuli demonstrating that the gaze shift between the ECG leads is different between the groups making correct and incorrect interpretations and therefore a factor in interpretation accuracy. The results shed further light on the relationship between visual behaviour and ECG interpretation accuracy, providing information that can be used to improve both human and automated interpretation approaches.
    Original languageEnglish
    Article number6
    Pages (from-to)1-13
    Number of pages13
    JournalScientific Reports
    Volume6
    DOIs
    Publication statusPublished - 5 Dec 2016

    Keywords

    • Eye tracking
    • human perception
    • electrocardiogram
    • visual transition
    • gaze shift
    • accuracy

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