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Objective Assessment of Listening Effort: Coregistration of Pupillometry and EEG
Linköping University, The Swedish Institute for Disability Research. Macquarie University, Australia; HEARing Cooperat Research Centre, Australia. (HEAD)
Macquarie University, Australia; HEARing Cooperat Research Centre, Australia.
Macquarie University, Australia; HEARing Cooperat Research Centre, Australia.
Macquarie University, Australia; HEARing Cooperat Research Centre, Australia.
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2017 (English)In: TRENDS IN HEARING, ISSN 2331-2165, Vol. 21, article id 2331216517706396Article in journal (Refereed) Published
Abstract [en]

Listening to speech in noise is effortful, particularly for people with hearing impairment. While it is known that effort is related to a complex interplay between bottom-up and top-down processes, the cognitive and neurophysiological mechanisms contributing to effortful listening remain unknown. Therefore, a reliable physiological measure to assess effort remains elusive. This study aimed to determine whether pupil dilation and alpha power change, two physiological measures suggested to index listening effort, assess similar processes. Listening effort was manipulated by parametrically varying spectral resolution (16- and 6-channel noise vocoding) and speech reception thresholds (SRT; 50% and 80%) while 19 young, normal-hearing adults performed a speech recognition task in noise. Results of off-line sentence scoring showed discrepancies between the target SRTs and the true performance obtained during the speech recognition task. For example, in the SRT80% condition, participants scored an average of 64.7%. Participants true performance levels were therefore used for subsequent statistical modelling. Results showed that both measures appeared to be sensitive to changes in spectral resolution (channel vocoding), while pupil dilation only was also significantly related to their true performance levels (%) and task accuracy (i.e., whether the response was correctly or partially recalled). The two measures were not correlated, suggesting they each may reflect different cognitive processes involved in listening effort. This combination of findings contributes to a growing body of research aiming to develop an objective measure of listening effort.

Place, publisher, year, edition, pages
Sage Publications, 2017. Vol. 21, article id 2331216517706396
Keywords [en]
alpha power; pupil dilation; listening effort; listening in noise; speech perception; spectral resolution
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-139813DOI: 10.1177/2331216517706396ISI: 000406554100001PubMedID: 28752807OAI: oai:DiVA.org:liu-139813DiVA, id: diva2:1133907
Note

Funding Agencies|Australian Hearing Hub, an initiative of Macquarie University; Australian Government; Business Cooperative Research Centres Programme of the Australian Government

Available from: 2017-08-17 Created: 2017-08-17 Last updated: 2018-03-27

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Lyxell, Björn
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The Swedish Institute for Disability ResearchDisability ResearchFaculty of Arts and SciencesDepartment of Otorhinolaryngology in Linköping
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CiteExportLink to record
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Citation style
  • apa
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  • Other style
More styles
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  • de-DE
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More languages
Output format
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