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Hard of Hearing Listeners Show Rollover at Moderate to High Levels for Speech Materials With and Without Semantic Context Information.

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Title: Hard of Hearing Listeners Show Rollover at Moderate to High Levels for Speech Materials With and Without Semantic Context Information.
Authors: Jürgensen, Lukas1,2 ljurgensen@health.sdu.dk, Neher, Tobias1,2, Fereczkowski, Michal1,2
Source: Journal of Speech, Language & Hearing Research. Oct2025, Vol. 68 Issue 10, p5055-5066. 12p.
Subject Terms: *Academic medical centers, *Intelligibility of speech, *Listening, *Audiometry, *Speech audiometry, *Algorithms, Statistical models, Research funding, Hearing aids, Severity of illness index, Descriptive statistics, Presbycusis, Semantics, Hearing levels, Confidence intervals, Data analysis software
Abstract: Purpose: At low levels, a level increase typically leads to better speech intelligibility (SI) due to more audibility. At high levels, a level increase can lead to poorer SI and, thus, "rollover." In a previous study conducted with listeners with normal audiometric thresholds, we found rollover with sentences without semantic context but not with semantic context, suggesting that context information can "mask" rollover. Here, we investigated if equivalent results can be found for listeners with elevated audiometric thresholds. Method: SI scores were measured for two groups of older hard of hearing adults with individual linear amplification. Testing was performed in speechshaped noise with context-rich and context-free sentences. One group was tested at speech levels of 65 and 75 dB SPL. The other group was tested at a level approximating maximal SI, that is, the individual aided most comfortable level (aMCL) + 10 dB, and at 85 dB SPL. Linear mixed-effects models were used to test for level-dependent changes in SI for the two sentence materials. Results: Rollover occurred for both groups and sentence materials. For the measurements made at 65 and 75 dB SPL, SI decreased by 7.1% for both sentence materials. For the measurements made at aMCL +10 dB and 85 dB SPL, SI decreased by 9.3% for the context-free sentences and by 10.4% for the context-rich sentences. Conclusion: Linearly aided hard of hearing listeners show rollover at moderate to high levels for sentence materials with and without semantic context information. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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  Data: Hard of Hearing Listeners Show Rollover at Moderate to High Levels for Speech Materials With and Without Semantic Context Information.
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  Data: <searchLink fieldCode="AR" term="%22Jürgensen%2C+Lukas%22">Jürgensen, Lukas</searchLink><relatesTo>1,2</relatesTo><i> ljurgensen@health.sdu.dk</i><br /><searchLink fieldCode="AR" term="%22Neher%2C+Tobias%22">Neher, Tobias</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Fereczkowski%2C+Michal%22">Fereczkowski, Michal</searchLink><relatesTo>1,2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Speech%2C+Language+%26+Hearing+Research%22">Journal of Speech, Language & Hearing Research</searchLink>. Oct2025, Vol. 68 Issue 10, p5055-5066. 12p.
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  Data: *<searchLink fieldCode="DE" term="%22Academic+medical+centers%22">Academic medical centers</searchLink><br />*<searchLink fieldCode="DE" term="%22Intelligibility+of+speech%22">Intelligibility of speech</searchLink><br />*<searchLink fieldCode="DE" term="%22Listening%22">Listening</searchLink><br />*<searchLink fieldCode="DE" term="%22Audiometry%22">Audiometry</searchLink><br />*<searchLink fieldCode="DE" term="%22Speech+audiometry%22">Speech audiometry</searchLink><br />*<searchLink fieldCode="DE" term="%22Algorithms%22">Algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+models%22">Statistical models</searchLink><br /><searchLink fieldCode="DE" term="%22Research+funding%22">Research funding</searchLink><br /><searchLink fieldCode="DE" term="%22Hearing+aids%22">Hearing aids</searchLink><br /><searchLink fieldCode="DE" term="%22Severity+of+illness+index%22">Severity of illness index</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+statistics%22">Descriptive statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Presbycusis%22">Presbycusis</searchLink><br /><searchLink fieldCode="DE" term="%22Semantics%22">Semantics</searchLink><br /><searchLink fieldCode="DE" term="%22Hearing+levels%22">Hearing levels</searchLink><br /><searchLink fieldCode="DE" term="%22Confidence+intervals%22">Confidence intervals</searchLink><br /><searchLink fieldCode="DE" term="%22Data+analysis+software%22">Data analysis software</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Purpose: At low levels, a level increase typically leads to better speech intelligibility (SI) due to more audibility. At high levels, a level increase can lead to poorer SI and, thus, "rollover." In a previous study conducted with listeners with normal audiometric thresholds, we found rollover with sentences without semantic context but not with semantic context, suggesting that context information can "mask" rollover. Here, we investigated if equivalent results can be found for listeners with elevated audiometric thresholds. Method: SI scores were measured for two groups of older hard of hearing adults with individual linear amplification. Testing was performed in speechshaped noise with context-rich and context-free sentences. One group was tested at speech levels of 65 and 75 dB SPL. The other group was tested at a level approximating maximal SI, that is, the individual aided most comfortable level (aMCL) + 10 dB, and at 85 dB SPL. Linear mixed-effects models were used to test for level-dependent changes in SI for the two sentence materials. Results: Rollover occurred for both groups and sentence materials. For the measurements made at 65 and 75 dB SPL, SI decreased by 7.1% for both sentence materials. For the measurements made at aMCL +10 dB and 85 dB SPL, SI decreased by 9.3% for the context-free sentences and by 10.4% for the context-rich sentences. Conclusion: Linearly aided hard of hearing listeners show rollover at moderate to high levels for sentence materials with and without semantic context information. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=ehh&AN=188657787
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        Value: 10.1044/2025_JSLHR-24-00804
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    Subjects:
      – SubjectFull: Academic medical centers
        Type: general
      – SubjectFull: Intelligibility of speech
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      – SubjectFull: Listening
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      – SubjectFull: Audiometry
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      – SubjectFull: Speech audiometry
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      – SubjectFull: Severity of illness index
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      – SubjectFull: Hearing levels
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      – SubjectFull: Confidence intervals
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      – TitleFull: Hard of Hearing Listeners Show Rollover at Moderate to High Levels for Speech Materials With and Without Semantic Context Information.
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              M: 10
              Text: Oct2025
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