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Pupil dilation indicates auditory signal detection: towards an objective hearing test based on eye-tracking
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics. (Stockholm Babylab)ORCID iD: 0000-0002-8036-516X
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0001-7658-9307
Royal Institute of Technology.
Royal Institute of Technology.
Show others and affiliations
2016 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Purpose: The long-term objective of this project is to develop an objective hearing threshold test that can be used in early infancy, using pupildilation as an indicator of hearing. The study purposes are 1) to identify relevant time-windows for analysis of pupillary responses to various auditory stimuli in adults, and 2) to evaluate a trial-minus-baseline approach to deal with unrelated pupillary responses in adults. Method: Participants’ pupil size is recorded using a Tobii T120 Eye-tracker. In the first test, participants fixate on a blank screen while sound stimuli are presented. From this data, typical pupillary responses and the relevant analysis time-window is determined and used in future tests. In the second test, participants watch movie clips while sound stimuli are presented. Visually identical sound and no-sound trials will be compared in order to isolate the pupillary changes tied to hearing sound from those related to changes in brightness in the visual stimuli. Results and conclusion: Data is currently being collected. Results from the pilot study indicate that the pupillary response related to sound detection occurs at around 900 ms after stimulus onset, and that a trial-minus-baseline approach is a viable option to eliminate unrelated pupillary responses.

Place, publisher, year, edition, pages
2016.
Keywords [en]
eyetracking, hearing threshold, pupillometry
National Category
Otorhinolaryngology Computer Engineering
Research subject
Oto-Rhino-Laryngology; Computer Systems
Identifiers
URN: urn:nbn:se:su:diva-138485OAI: oai:DiVA.org:su-138485DiVA, id: diva2:1067470
Conference
33rd World Congress of Audiology, 18-21 september 2016, Vancouver, Canada
Available from: 2017-01-20 Created: 2017-01-20 Last updated: 2018-01-13Bibliographically approved

Open Access in DiVA

fulltext(905 kB)40 downloads
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33rd World Congress of Audiology

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Schwarz, Iris-CorinnaMarklund, EllenUhlén, Inger
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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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  • asciidoc
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