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Multimodal Neural and Behavioral Data Predict Response to Rehabilitation in Chronic Poststroke Aphasia
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In: Stroke (2022)
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Factors affecting outcomes for semantic feature analysis treatment in post-stroke bilingual aphasia
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Behavioral and neural effects of intensive cognitive and communication rehabilitation in young college-bound adults with acquired brain injury
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Varying degrees of cognitive control and its impact on lexical access during verbal fluency tasks in bilingual persons with aphasia
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Abstract:
BACKGROUND: Different interactional contexts which bilingual speakers encounter place different demands of cognitive control on language processing (Green & Abutalebi, 2013: Adaptive Control Hypothesis; Green, 1998: Inhibitory Control Model). However, how varying cognitive control demands impact lexical access in bilingual persons with aphasia (BPWA) remains unclear. Verbal fluency tasks may provide valuable insights into the interplay between cognitive control and lexical access in BPWA by addressing word generation abilities in language contexts that exert varying degrees of cognitive control effort. AIMS: The present study aimed to examine the performance of BPWA on a semantic category generation task that requires word retrieval in single- and dual-language contexts with varying cognitive control demands and a traditional letter fluency task in single-language contexts. Associations between verbal fluency performance and (i) language use history, and (ii) performance on standardized measures for both BPWA and healthy bilinguals were also examined. METHODS AND PROCEDURES: Twenty-three Spanish-English BPWA and twenty-two Spanish-English healthy bilinguals completed a language use questionnaire, verbal fluency testing and standardized language assessments in each language. The semantic category generation task included four conditions: two conditions examined word retrieval in the first-acquired language (L1) and second-acquired language (L2) in single-language contexts (No Switch-L1 and No Switch-L2) and two conditions elicited word retrieval in dual-language contexts (Self-Switch and Forced-Switch) with low and high cognitive control demands by allowing or restricting switching across languages. The letter fluency task was administered in single-language contexts only (F, A, S for English and P, M, R for Spanish). Verbal fluency performance was compared across conditions and groups using multivariate analyses. Further, correlational analyses were used to examine associations between verbal fluency tasks and bilingual language history and performance on language measures. OUTCOMES AND RESULTS: Overall, the healthy bilinguals outperformed BPWA both in terms of number of correct responses and proportion accuracy across all conditions of the two verbal fluency tasks. However, similar patterns of performance arose when examining performance of the two groups separately. Such that both groups showed reduced performance in the FS condition relative to other conditions (NS-L1, NS-L1, and SS for the healthy bilinguals and SS for the BPWA). However, the BPWA appeared to be more sensitive to the effects of increased cognitive control on lexical access relative to healthy bilinguals, as they also showed reduced performance in the NS-L2 condition compared to the SS condition. Additionally, healthy bilingual produced larger average cluster sizes, number of clusters, and number of switches than BPWA across both verbal fluency tasks. Finally, BPWA and healthy bilinguals’ performance on both verbal fluency tasks was associated with metrics of bilingual language history and language measures. Additionally, for BPWA, verbal fluency performance was associated with measures of cognitive and executive function. CONCLUSIONS: The findings of this study suggest that verbal fluency tasks can help characterize the impact of cognitive control on lexical access in BPWA in single- and dual-language contexts with important clinical implications. ; 2022-02-16T00:00:00Z
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Keyword:
Speech therapy
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URL: https://hdl.handle.net/2144/42059
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Acquired Brain Injury in Adults: A Review of Pathophysiology, Recovery, and Rehabilitation
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In: Perspect ASHA Spec Interest Groups (2021)
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Clustering and Switching in Verbal Fluency Across Varying Degrees of Cognitive Control Demands: Evidence From Healthy Bilinguals and Bilingual Patients With Aphasia
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In: Neurobiol Lang (Camb) (2021)
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Predicting language treatment response in bilingual aphasia using neural network-based patient models
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In: Sci Rep (2021)
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Telerehabilitation for Word Retrieval Deficits in Bilinguals With Aphasia: Effectiveness and Reliability as Compared to In-person Language Therapy
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In: Front Neurol (2021)
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Predicting language recovery in post-stroke aphasia using behavior and functional MRI
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In: Sci Rep (2021)
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Telerehabilitation for word retrieval deficits in bilinguals with aphasia: Effectiveness and reliability as compared to in-person language therapy
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A Virtual, Randomized, Control Trial of a Digital Therapeutic for Speech, Language, and Cognitive Intervention in Post-stroke Persons With Aphasia ; Frontiers in Neurology
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Aphasia management in growing multiethnic populations
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In: Research outputs 2014 to 2021 (2020)
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Epilogue: Harnessing the experimental and clinical resources to address service imperatives in multiethnic aphasia caseloads
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In: Research outputs 2014 to 2021 (2020)
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Predicting treatment outcomes for bilinguals with aphasia using computational modeling: Study protocol for the PROCoM randomised controlled trial
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Videoconference Administration of the Western Aphasia Battery–Revised: Feasibility and Validity
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In: Am J Speech Lang Pathol (2020)
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Predicting treatment outcomes for bilinguals with aphasia using computational modeling: Study protocol for the PROCoM randomised controlled trial
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In: BMJ Open (2020)
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Verbal fluency as a measure of lexical access and cognitive control in bilingual persons with aphasia
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In: Aphasiology (2020)
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Functional Near-Infrared Spectroscopy in the Study of Speech and Language Impairment Across the Life Span: A Systematic Review
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In: Am J Speech Lang Pathol (2020)
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Pre-treatment graph measures of a functional semantic network are associated with naming therapy outcomes in chronic aphasia
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In: Brain Lang (2020)
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