Acoustic and phonemic processing are impaired in individuals with aphasia
Abstract Acoustic and phonemic processing are understudied in aphasia, a language disorder that can affect different levels and modalities of language processing. For successful speech comprehension, processing of the speech envelope is necessary, which relates to amplitude changes over time (e.g.,...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-07-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-37624-w |
| _version_ | 1797778901746843648 |
|---|---|
| author | Jill Kries Pieter De Clercq Robin Lemmens Tom Francart Maaike Vandermosten |
| author_facet | Jill Kries Pieter De Clercq Robin Lemmens Tom Francart Maaike Vandermosten |
| author_sort | Jill Kries |
| collection | DOAJ |
| description | Abstract Acoustic and phonemic processing are understudied in aphasia, a language disorder that can affect different levels and modalities of language processing. For successful speech comprehension, processing of the speech envelope is necessary, which relates to amplitude changes over time (e.g., the rise times). Moreover, to identify speech sounds (i.e., phonemes), efficient processing of spectro-temporal changes as reflected in formant transitions is essential. Given the underrepresentation of aphasia studies on these aspects, we tested rise time processing and phoneme identification in 29 individuals with post-stroke aphasia and 23 healthy age-matched controls. We found significantly lower performance in the aphasia group than in the control group on both tasks, even when controlling for individual differences in hearing levels and cognitive functioning. Further, by conducting an individual deviance analysis, we found a low-level acoustic or phonemic processing impairment in 76% of individuals with aphasia. Additionally, we investigated whether this impairment would propagate to higher-level language processing and found that rise time processing predicts phonological processing performance in individuals with aphasia. These findings show that it is important to develop diagnostic and treatment tools that target low-level language processing mechanisms. |
| first_indexed | 2024-03-12T23:23:14Z |
| format | Article |
| id | doaj.art-5e239a71939f455690c284250fbf936a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-12T23:23:14Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-5e239a71939f455690c284250fbf936a2023-07-16T11:16:48ZengNature PortfolioScientific Reports2045-23222023-07-0113111510.1038/s41598-023-37624-wAcoustic and phonemic processing are impaired in individuals with aphasiaJill Kries0Pieter De Clercq1Robin Lemmens2Tom Francart3Maaike Vandermosten4Experimental Oto-Rhino-Laryngology, Department of Neurosciences, Leuven Brain Institute, KU LeuvenExperimental Oto-Rhino-Laryngology, Department of Neurosciences, Leuven Brain Institute, KU LeuvenExperimental Neurology, Department of Neurosciences, KU LeuvenExperimental Oto-Rhino-Laryngology, Department of Neurosciences, Leuven Brain Institute, KU LeuvenExperimental Oto-Rhino-Laryngology, Department of Neurosciences, Leuven Brain Institute, KU LeuvenAbstract Acoustic and phonemic processing are understudied in aphasia, a language disorder that can affect different levels and modalities of language processing. For successful speech comprehension, processing of the speech envelope is necessary, which relates to amplitude changes over time (e.g., the rise times). Moreover, to identify speech sounds (i.e., phonemes), efficient processing of spectro-temporal changes as reflected in formant transitions is essential. Given the underrepresentation of aphasia studies on these aspects, we tested rise time processing and phoneme identification in 29 individuals with post-stroke aphasia and 23 healthy age-matched controls. We found significantly lower performance in the aphasia group than in the control group on both tasks, even when controlling for individual differences in hearing levels and cognitive functioning. Further, by conducting an individual deviance analysis, we found a low-level acoustic or phonemic processing impairment in 76% of individuals with aphasia. Additionally, we investigated whether this impairment would propagate to higher-level language processing and found that rise time processing predicts phonological processing performance in individuals with aphasia. These findings show that it is important to develop diagnostic and treatment tools that target low-level language processing mechanisms.https://doi.org/10.1038/s41598-023-37624-w |
| spellingShingle | Jill Kries Pieter De Clercq Robin Lemmens Tom Francart Maaike Vandermosten Acoustic and phonemic processing are impaired in individuals with aphasia Scientific Reports |
| title | Acoustic and phonemic processing are impaired in individuals with aphasia |
| title_full | Acoustic and phonemic processing are impaired in individuals with aphasia |
| title_fullStr | Acoustic and phonemic processing are impaired in individuals with aphasia |
| title_full_unstemmed | Acoustic and phonemic processing are impaired in individuals with aphasia |
| title_short | Acoustic and phonemic processing are impaired in individuals with aphasia |
| title_sort | acoustic and phonemic processing are impaired in individuals with aphasia |
| url | https://doi.org/10.1038/s41598-023-37624-w |
| work_keys_str_mv | AT jillkries acousticandphonemicprocessingareimpairedinindividualswithaphasia AT pieterdeclercq acousticandphonemicprocessingareimpairedinindividualswithaphasia AT robinlemmens acousticandphonemicprocessingareimpairedinindividualswithaphasia AT tomfrancart acousticandphonemicprocessingareimpairedinindividualswithaphasia AT maaikevandermosten acousticandphonemicprocessingareimpairedinindividualswithaphasia |