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Bienvenido

Titulo Artículo : Dynamic integration of conceptual information during learning
Titulo Revista: PLoS One

ISBN

1932-6203
Autores Laura A. Libby
Takao Noguchi
Bradley C. Love
Charan Ranganath
Marika C. Inhoff
Año de publicacion 2018

Suplemento

Numero 11 Volumen 13
Pagina Inicial 1 Pagina Final 26
Idioma: Inglés Base de datos bibliográfica: Biblioteca Virtual en Salud(BVS)
Resumen : The development and application of concepts is a critical component of cognition. Although concepts can be formed on the basis of simple perceptual or semantic features, conceptual representations can also capitalize on similarities across feature relationships. By representing these types of higher-order relationships, concepts can simplify the learning problem and facilitate decisions. Despite this, little is known about the neural mechanisms that support the construction and deployment of these kinds of higher-order concepts during learning. To address this question, we combined a carefully designed associative learning task with computational model-based functional magnetic resonance imaging (fMRI). Participants were scanned as they learned and made decisions about sixteen pairs of cues and associated outcomes. Associations were structured such that individual cues shared feature relationships, operationalized as shared patterns of cue pair-outcome associations. In order to capture the large number of possible conceptual representational structures that participants might employ and to evaluate how conceptual representations are used during learning, we leveraged a well-specified Bayesian computational model of category learning [1]. Behavioral and model-based results revealed that participants who displayed a tendency to link experiences in memory benefitted from faster learning rates, suggesting that the use of the conceptual structure in the task facilitated decisions about cue pair-outcome associations. Model-based fMRI analyses revealed that trial-by-trial integration of cue information into higher-order conceptual representations was supported by an anterior temporal (AT) network of regions previously implicated in representing complex conjunctions of features and meaning-based information.
Palabras Claves : Medical Education
Learning
Resonancia Magnética Funcional

Tipo de acceso:

libre Disponibilidad Link Externo
Publico Objetivo: Docentes , Educadores Medicos , Evaluadores ,