2018, Número 1
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Arch Neurocien 2018; 23 (1)
La cognición semántica y sus alteraciones en la demencia y afasia semántica
Ferrer-Aragón J, Patiño TVM
Idioma: Español
Referencias bibliográficas: 83
Paginas: 39-49
Archivo PDF: 400.70 Kb.
RESUMEN
El estudio de la cognición semántica es una tarea relativamente nueva en el campo de
las neurociencias. Su investigación sistemática comenzó hace unas décadas a partir
de la publicación de los primeros trabajos que reportaron alteraciones selectivas del
conocimiento semántico, lo que llevó a la formulación de diversos modelos teóricos. En
este artículo se revisan los principales problemas e hipótesis acerca de la organización
estructural y funcional de la cognición semántica desde un nuevo modelo denominado
cognición semántica controlada, propuesto por Lambon Ralph, et. al. Asimismo, se
analizan los principales hallazgos en los que se sustenta este modelo, obtenidos a partir
de estudios neurofuncionales en sujetos neurológicamente sanos, así como de estudios
neuropsicológicos en pacientes con demencia semántica y afasia semántica. Dicho
análisis pueden constituir un aporte para una mayor comprensión de los mecanismos
neurocognitivos de la cognición semántica en condiciones normales y patológicas.
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