| 1 |
Rehabilitating an attrited language in a bilingual person with aphasia ...
|
|
|
|
BASE
|
|
Show details
|
|
|
| 2 |
Rehabilitating an attrited language in a bilingual person with aphasia ...
|
|
|
|
BASE
|
|
Show details
|
|
|
| 3 |
Demographic Effects on Longitudinal Semantic Processing, Working Memory, and Cognitive Speed
|
|
|
|
In: J Gerontol B Psychol Sci Soc Sci (2020)
|
|
BASE
|
|
Show details
|
|
|
| 5 |
The role of executive functions in object- and action-naming among older adults
|
|
|
|
In: Exp Aging Res (2019)
|
|
BASE
|
|
Show details
|
|
|
| 6 |
Semantic and lexical features of words dissimilarly affected by non-fluent, logopenic, and semantic primary progressive aphasia
|
|
|
|
Abstract:
OBJECTIVE: To determine the effect of three psycholinguistic variables—lexical frequency, age of acquisition, and neighborhood density—on lexical-semantic processing in individuals with non-fluent (nfvPPA), logopenic (lvPPA), and semantic primary progressive aphasia (svPPA). Identifying the scope and independence of these features can provide valuable information about the organization of words in our mind and brain. METHOD: We administered a lexical-decision task—with words carefully selected to permit distinguishing lexical frequency, age of acquisition, and orthographic neighborhood density effects—to 41 individuals with PPA (13 nfvPPA, 14 lvPPA, 14 svPPA) and 25 controls. RESULTS: Of the psycholinguistic variables studied, lexical frequency had the largest influence on lexical-semantic processing, but age of acquisition and neighborhood density also played an independent role. The results reflect a brain-language relationship with different proportional effects of frequency, AoA, and ND in the PPA variants, in a pattern that is consistent with the organization of the mental lexicon. Individuals with nfvPPA and lvPPA experienced a neighborhood density effect consistent with the role of inferior frontal and temporoparietal regions in lexical analysis and word form processing. By contrast, individuals with svPPA experienced an age of acquisition effect consistent with the role of the anterior temporal lobe in semantic processing. CONCLUSIONS: The findings are in line with a hierarchical mental lexicon structure with a conceptual (semantic) and a lexeme (word-form) level, such that a selective deficit at one of these levels of the mental lexicon manifests differently in lexical-semantic processing performance, consistent with the affected language-specific brain region in each PPA variant.
|
|
Keyword:
Article
|
|
URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6879829/
https://doi.org/10.1017/S1355617719000948
http://www.ncbi.nlm.nih.gov/pubmed/31511121
|
|
BASE
|
|
Hide details
|
|
|
| 7 |
Primary Progressive Aphasias in Bilinguals and Multilinguals
|
|
|
|
In: Communication Disorders Faculty Publications (2019)
|
|
BASE
|
|
Show details
|
|
|
| 8 |
Ageing as a Confound in Language Attrition Research: Lexical Retrieval, Language Use, and Cognitive and Neural Changes
|
|
|
|
In: Communication Disorders Faculty Publications (2019)
|
|
BASE
|
|
Show details
|
|
|
| 13 |
First language grapheme-phoneme transparency effects in adult second-language learning
|
|
|
|
BASE
|
|
Show details
|
|
|
|
|
