Preserved semantic categorical organization in mild cognitive impairment: A network analysis of verbal fluency

Nevado, Ángel, Rio, David del, Martín-Aragoneses, María Teresa, Prados, José M. y López-Higes, Ramón . () Preserved semantic categorical organization in mild cognitive impairment: A network analysis of verbal fluency. Neuropsychologia Volume 157, 2021, 107875


Título Preserved semantic categorical organization in mild cognitive impairment: A network analysis of verbal fluency
Autor(es) Nevado, Ángel
Rio, David del
Martín-Aragoneses, María Teresa
Prados, José M.
López-Higes, Ramón
Materia(s) Educación
Abstract 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.
Palabras clave Executive function
Mild cognitive impairment
Network analysis
Semantic memory
Semantic verbal fluency test
Editor(es) Elsevier
Formato application/pdf
Identificador bibliuned:DptoMIDEII-FEDU-Articulos-Mtmartin-0003
http://e-spacio.uned.es/fez/view/bibliuned:DptoMIDEII-FEDU-Articulos-Mtmartin-0003
DOI - identifier https://doi.org/10.1016/j.neuropsychologia.2021.107875
fecha fin de embargo 2021-07-01
ISSN - identifier 0028-3932
Nombre de la revista Neuropsychologia
Número de Volumen 157
Publicado en la Revista Neuropsychologia Volume 157, 2021, 107875
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/closedAccess
Tipo de acceso Acceso cerrado
Notas adicionales 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
Notas adicionales 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

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Creado: Thu, 08 Feb 2024, 19:08:06 CET