Lexical Search and Retrieval in Aphasia: A Computational Analysis of Semantic Fluency.
Purpose: Effectively searching among related items in memory is a hallmark of neurotypical cognition, and analyses of retrieval patterns in the semantic fluency task have provided invaluable insight into how individuals navigate an interconnected conceptual–lexical network. However, few studies have...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 69; no. 7; pp. 3253 - 3272 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Jul2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=195295675&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 195295675 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Jul2026 vid: 69 iid: 7 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 195295675 10.1044/2026_JSLHR-25-00906 ppf: 3253 ppct: 19 formats: fmt: @attributes: type: P size: 1.4MB tig: atl: Lexical Search and Retrieval in Aphasia: A Computational Analysis of Semantic Fluency. aug: au: Hambric, Channing E. Middleton, Erica L. Kumar, Abhilasha A. affil: Department of Psychology, Bowdoin College, Brunswick, ME. Jefferson Moss Rehabilitation Research Institute, Elkins Park, PA. su: United States Cross-sectional method Computer simulation Task performance Prompts (Psychology) Research funding Rehabilitation of aphasic persons Phonological awareness Multiple regression analysis Descriptive statistics Speech-language pathology Neurolinguistic programming Stroke rehabilitation Neuropsychological tests Semantic memory Stroke patients Comparative studies Data analysis software Speech therapy Phonology sug: subj: Cross-sectional method Computer simulation Task performance United States Prompts (Psychology) Research funding Rehabilitation of aphasic persons Phonological awareness Multiple regression analysis Descriptive statistics Speech-language pathology Neurolinguistic programming Stroke rehabilitation Neuropsychological tests Semantic memory Stroke patients Comparative studies Data analysis software Speech therapy Phonology ab: Purpose: Effectively searching among related items in memory is a hallmark of neurotypical cognition, and analyses of retrieval patterns in the semantic fluency task have provided invaluable insight into how individuals navigate an interconnected conceptual–lexical network. However, few studies have assessed retrieval patterns in the semantic fluency task among people with aphasia (PWA). Method: In the present work, we used computational modeling to investigate the types of lexical information healthy controls (n = 47) and PWA (n = 53) use during semantic memory search. We also assessed how these metrics related to other aphasia battery measures, including tests probing different aspects of semantic processing. Results: Compared to neurotypical controls, PWA produced fewer items, and consecutive items were less phonologically similar. Computational modeling of search behavior indicated that, whereas controls primarily used phonology to search within local clusters of related items, PWA were influenced by phonology both within clusters and at switch points. We also found that verbal semantic comprehension (measured via synonymy triplet scores) was negatively associated with average consecutive phonological similarity in the semantic fluency task, suggesting that PWA with impaired conceptual–lexical access may be more likely to exploit phonological similarity as a compensatory measure. Conclusion: Altogether, the results indicate that individuals with aphasia struggle with adapting search cues during the semantic fluency task compared to neurotypical speakers, and the present work showcases the utility of the computational modeling approach for characterizing semantic memory search in neurotypical and language-impaired populations. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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