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Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort

Recordings of the pupillary response have been used in numerous studies to assess listening effort during a speech-in-noise task. Most studies focused on averaged responses across listeners, whereas less is known about pupil dilation as an indicator of the individuals’ listening effort. The present...

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Autores principales: Neagu, Mihaela-Beatrice, Kressner, Abigail A., Relaño-Iborra, Helia, Bækgaard, Per, Dau, Torsten, Wendt, Dorothea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9947699/
http://dx.doi.org/10.1177/23312165231153288
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author Neagu, Mihaela-Beatrice
Kressner, Abigail A.
Relaño-Iborra, Helia
Bækgaard, Per
Dau, Torsten
Wendt, Dorothea
author_facet Neagu, Mihaela-Beatrice
Kressner, Abigail A.
Relaño-Iborra, Helia
Bækgaard, Per
Dau, Torsten
Wendt, Dorothea
author_sort Neagu, Mihaela-Beatrice
collection PubMed
description Recordings of the pupillary response have been used in numerous studies to assess listening effort during a speech-in-noise task. Most studies focused on averaged responses across listeners, whereas less is known about pupil dilation as an indicator of the individuals’ listening effort. The present study investigated the reliability of several pupil features as potential indicators of individual listening effort and the impact of different normalization procedures on the reliability. The pupil diameters of 31 normal-hearing listeners were recorded during multiple visits while performing a speech-in-noise task. The signal-to-noise ratios (SNRs) of the stimuli ranged from [Formula: see text] 12 dB to [Formula: see text] 4 dB. All listeners were measured twice at separate visits, and 11 were re-tested at a third visit. To examine the reliability of the pupil responses across visits, the intraclass correlation coefficient was applied to the peak and mean pupil dilation and to the temporal features of the pupil response, extracted using growth curve analysis. The reliability of the pupillary response was assessed in relation to SNR and different normalization procedures over multiple visits. The most reliable pupil features were the traditional mean and peak pupil dilation. The highest reliability results were obtained when the data were baseline-corrected and normalized to the individual pupil response range across all visits. Moreover, the present study results showed only a minor impact of the SNR and the number of visits on the reliability of the pupil response. Overall, the results may provide an important basis for developing a standardized test for pupillometry in the clinic.
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spelling pubmed-99476992023-02-24 Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort Neagu, Mihaela-Beatrice Kressner, Abigail A. Relaño-Iborra, Helia Bækgaard, Per Dau, Torsten Wendt, Dorothea Trends Hear Review Article Recordings of the pupillary response have been used in numerous studies to assess listening effort during a speech-in-noise task. Most studies focused on averaged responses across listeners, whereas less is known about pupil dilation as an indicator of the individuals’ listening effort. The present study investigated the reliability of several pupil features as potential indicators of individual listening effort and the impact of different normalization procedures on the reliability. The pupil diameters of 31 normal-hearing listeners were recorded during multiple visits while performing a speech-in-noise task. The signal-to-noise ratios (SNRs) of the stimuli ranged from [Formula: see text] 12 dB to [Formula: see text] 4 dB. All listeners were measured twice at separate visits, and 11 were re-tested at a third visit. To examine the reliability of the pupil responses across visits, the intraclass correlation coefficient was applied to the peak and mean pupil dilation and to the temporal features of the pupil response, extracted using growth curve analysis. The reliability of the pupillary response was assessed in relation to SNR and different normalization procedures over multiple visits. The most reliable pupil features were the traditional mean and peak pupil dilation. The highest reliability results were obtained when the data were baseline-corrected and normalized to the individual pupil response range across all visits. Moreover, the present study results showed only a minor impact of the SNR and the number of visits on the reliability of the pupil response. Overall, the results may provide an important basis for developing a standardized test for pupillometry in the clinic. SAGE Publications 2023-02-22 /pmc/articles/PMC9947699/ http://dx.doi.org/10.1177/23312165231153288 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Review Article
Neagu, Mihaela-Beatrice
Kressner, Abigail A.
Relaño-Iborra, Helia
Bækgaard, Per
Dau, Torsten
Wendt, Dorothea
Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title_full Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title_fullStr Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title_full_unstemmed Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title_short Investigating the Reliability of Pupillometry as a Measure of Individualized Listening Effort
title_sort investigating the reliability of pupillometry as a measure of individualized listening effort
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9947699/
http://dx.doi.org/10.1177/23312165231153288
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