Publicación: Preserved semantic categorical organization in mild cognitive impairment: A network analysis of verbal fluency
Fecha
2021-07-01
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Prologuista
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Derechos de acceso
info:eu-repo/semantics/restrictedAccess
Título de la revista
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Editor
Elsevier
Resumen
The decline in semantic verbal fluency as we age may originate from both semantic memory degradation and executive function deficits. We investigated to what extent semantic memory is organized into categories in older adults with mild cognitive impairment (n = 81) and healthy controls (n = 83). We obtained the semantic networks automatically from the probability of co-occurrence of words in a verbal fluency test and characterized them with graph-theory tools. We found that the degree of categorical organization was similar for both diagnostic groups, but there was a higher tendency to transition to other categories during word production in the patient group. These results suggest that the semantic network is preserved in mild cognitive impairment, but also that the existing associations are exploited less efficiently during long-term memory search, possibly because of deficits in executive function.
Descripción
The registered version of this article, first published in Neuropsychologia Volume 157, 2021, 107875, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.neuropsychologia.2021.107875
La versión registrada de este artículo, publicado por primera vez en Neuropsychologia Volume 157, 2021, 107875, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.neuropsychologia.2021.107875
La versión registrada de este artículo, publicado por primera vez en Neuropsychologia Volume 157, 2021, 107875, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.neuropsychologia.2021.107875
Categorías UNESCO
Palabras clave
Executive function, Mild cognitive impairment, Network analysis, Semantic memory, Semantic verbal fluency test
Citación
Nevado, Ángel, Rio, David del, Martín-Aragoneses, María Teresa, Prados, José M. y López-Higes, Ramón . (2021) Preserved semantic categorical organization in mild cognitive impairment: A network analysis of verbal fluency. Neuropsychologia Volume 157, 107875
Centro
Facultades y escuelas::Facultad de Educación
Departamento
Métodos de Investigación y Diagnóstico en Educación II (Orientación Educativa, Diagnóstico e Intervención Psicopedagógica)