August 2023
Volume 23, Issue 9
Open Access
Vision Sciences Society Annual Meeting Abstract  |   August 2023
Concealed familiar face detection with oculomotor measures and EEG in rapid serial visual presentation
Author Affiliations & Notes
  • Ivory Y. Chen
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Aytaç Karabay
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Sebastiaan Mathȏt
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Philipp K. Büchel
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Robbert van der Mijn
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Howard Bowman
    School of Psychology, University of Birmingham, UK
    School of Computing, University of Kent, UK
  • Elkan G. Akyürek
    Department of Experimental Psychology, University of Groningen, Groningen, the Netherlands
  • Footnotes
    Acknowledgements  Chinese Scholarship Council
Journal of Vision August 2023, Vol.23, 5343. doi:https://doi.org/10.1167/jov.23.9.5343
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      Ivory Y. Chen, Aytaç Karabay, Sebastiaan Mathȏt, Philipp K. Büchel, Robbert van der Mijn, Howard Bowman, Elkan G. Akyürek; Concealed familiar face detection with oculomotor measures and EEG in rapid serial visual presentation. Journal of Vision 2023;23(9):5343. https://doi.org/10.1167/jov.23.9.5343.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Traditional concealed information tests (CIT) work fairly well, but people can still use countermeasures to avoid detection. Presenting the critical stimuli in rapid serial visual presentation (RSVP) while measuring EEG has proven effective against countermeasures. We investigated here to what extent concealed information (familiar faces) are also detectable in RSVP-based CIT with oculomotor measures, in particular pupil size and micro-saccades. In our two studies (one with oculomotor measures and one with EEG), 31 and 34 participants, respectively, were asked to search for a target face in an RSVP task, while a familiar face, one of their parents’ faces, or a control face also appeared in the task. We found that the pupil dilated more in response to the familiar faces, as compared to control faces, an effect that was most pronounced when looking at the velocity of pupil-size changes, rather than pupil size itself. Micro-saccades did not seem to add much information. Overall, EEG remained more sensitive than the oculomotor measures, but concealed information detection by means of the latter was nevertheless substantial. Taking practical considerations into account, the application of oculomotor measures in RSVP-based CIT may thus present a viable alternative to EEG.

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