Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study
AimsThis preliminary study aimed to investigate therapy-induced electrophysiological changes in persons with primary progressive aphasia (PPA). The investigated event-related potential (ERP) components associated with language processing were the mismatch negativity, P300, N400, and P600.MethodsA li...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnhum.2022.766866/full |
| _version_ | 1818393589417246720 |
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| author | Jara Stalpaert Sofie Standaert Lien D’Helft Marijke Miatton Anne Sieben Tim Van Langenhove Wouter Duyck Pieter van Mierlo Miet De Letter |
| author_facet | Jara Stalpaert Sofie Standaert Lien D’Helft Marijke Miatton Anne Sieben Tim Van Langenhove Wouter Duyck Pieter van Mierlo Miet De Letter |
| author_sort | Jara Stalpaert |
| collection | DOAJ |
| description | AimsThis preliminary study aimed to investigate therapy-induced electrophysiological changes in persons with primary progressive aphasia (PPA). The investigated event-related potential (ERP) components associated with language processing were the mismatch negativity, P300, N400, and P600.MethodsA linguistic ERP test battery and standardized language assessment were administered in four patients with PPA of which two received speech-language therapy (SLT) and two did not receive therapy. The battery was administered twice with approximately 6 months in between in each patient. The results of the follow-up assessments were compared to the results of the initial assessments.ResultsAlthough the results of the behavioral language assessment remained relatively stable between the initial and follow-up assessments, changes in the mean amplitudes, onset latencies, and duration of the ERP components were found in the four patients. In the two patients that did not receive SLT, an increased delay in 50% and a decreased mean amplitude in 25% of the measured ERP components were found. The electrophysiological changes found in the patients that received SLT were variable. Interestingly, the mismatch negativity and the N400 effect elicited by the categorical priming paradigm were less delayed and had an increased mean amplitude at the follow-up assessment in the patient with the non-fluent variant who received SLT. In this patient, the P600 component was absent at the initial assessment but present at the follow-up assessment.ConclusionAlthough no clear patterns in electrophysiological changes between patients who received SLT and patients who did not receive SLT were found by our preliminary study, it seems like the SLT induced improvements or compensation mechanisms in some specific language comprehension processes in the patient with the NFV. The results of this study are still preliminary because only four heterogeneous patients were included. Future studies should include larger patient groups of the three clinical variants because the therapy-induced electrophysiological changes might differ depending on the clinical variant and the underlying pathology. |
| first_indexed | 2024-12-14T05:47:43Z |
| format | Article |
| id | doaj.art-ecb50d811c1a443b8507baf04f1a1a34 |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-14T05:47:43Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-ecb50d811c1a443b8507baf04f1a1a342022-12-21T23:14:49ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612022-03-011610.3389/fnhum.2022.766866766866Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary StudyJara Stalpaert0Sofie Standaert1Lien D’Helft2Marijke Miatton3Anne Sieben4Tim Van Langenhove5Wouter Duyck6Pieter van Mierlo7Miet De Letter8Department of Rehabilitation Sciences, Ghent University, Ghent, BelgiumLogopediepraktijk Bieke Van Waeyenberghe, Lievegem, BelgiumLogopediepraktijk Bieke Van Waeyenberghe, Lievegem, BelgiumDepartment of Neurology, Ghent University Hospital, Ghent, BelgiumDepartment of Neurology, Ghent University Hospital, Ghent, BelgiumDepartment of Neurology, Ghent University Hospital, Ghent, BelgiumDepartment of Experimental Psychology, Ghent University, Ghent, BelgiumMedical Image and Signal Processing Group, Department of Electronics and Information Systems, Ghent University, Ghent, BelgiumDepartment of Rehabilitation Sciences, Ghent University, Ghent, BelgiumAimsThis preliminary study aimed to investigate therapy-induced electrophysiological changes in persons with primary progressive aphasia (PPA). The investigated event-related potential (ERP) components associated with language processing were the mismatch negativity, P300, N400, and P600.MethodsA linguistic ERP test battery and standardized language assessment were administered in four patients with PPA of which two received speech-language therapy (SLT) and two did not receive therapy. The battery was administered twice with approximately 6 months in between in each patient. The results of the follow-up assessments were compared to the results of the initial assessments.ResultsAlthough the results of the behavioral language assessment remained relatively stable between the initial and follow-up assessments, changes in the mean amplitudes, onset latencies, and duration of the ERP components were found in the four patients. In the two patients that did not receive SLT, an increased delay in 50% and a decreased mean amplitude in 25% of the measured ERP components were found. The electrophysiological changes found in the patients that received SLT were variable. Interestingly, the mismatch negativity and the N400 effect elicited by the categorical priming paradigm were less delayed and had an increased mean amplitude at the follow-up assessment in the patient with the non-fluent variant who received SLT. In this patient, the P600 component was absent at the initial assessment but present at the follow-up assessment.ConclusionAlthough no clear patterns in electrophysiological changes between patients who received SLT and patients who did not receive SLT were found by our preliminary study, it seems like the SLT induced improvements or compensation mechanisms in some specific language comprehension processes in the patient with the NFV. The results of this study are still preliminary because only four heterogeneous patients were included. Future studies should include larger patient groups of the three clinical variants because the therapy-induced electrophysiological changes might differ depending on the clinical variant and the underlying pathology.https://www.frontiersin.org/articles/10.3389/fnhum.2022.766866/fullprimary progressive aphasiaevent-related potentialslanguageneuroplasticitylanguage therapyfollow-up |
| spellingShingle | Jara Stalpaert Sofie Standaert Lien D’Helft Marijke Miatton Anne Sieben Tim Van Langenhove Wouter Duyck Pieter van Mierlo Miet De Letter Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study Frontiers in Human Neuroscience primary progressive aphasia event-related potentials language neuroplasticity language therapy follow-up |
| title | Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study |
| title_full | Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study |
| title_fullStr | Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study |
| title_full_unstemmed | Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study |
| title_short | Therapy-Induced Electrophysiological Changes in Primary Progressive Aphasia: A Preliminary Study |
| title_sort | therapy induced electrophysiological changes in primary progressive aphasia a preliminary study |
| topic | primary progressive aphasia event-related potentials language neuroplasticity language therapy follow-up |
| url | https://www.frontiersin.org/articles/10.3389/fnhum.2022.766866/full |
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