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Aprendizaje de plantillas de atención para la toma de decisiones basada en valores
Caroline I Jahn1, Nikola T Markov1, Britney Morea1
1Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08540, USA.
Cell
|February 24, 2024
Resumen
El cerebro aprende nuevas plantillas de atención ajustando las representaciones neuronales en la corteza prefrontal y parietal. Estas plantillas permiten el despliegue flexible de la atención en todas las tareas al transformar las características de estímulo en un valor común.
Área de la Ciencia:
- La neurociencia
- Ciencias cognitivas
- Neurociencia computacional
Sus antecedentes:
- La atención filtra selectivamente la información sensorial para priorizar los estímulos relevantes para la tarea.
- El control de la atención se basa en "plantillas de atención" internas que representan las características de estímulo relevantes en la actualidad.
Objetivo del estudio:
- Investigar los mecanismos neuronales que subyacen al aprendizaje y al despliegue flexible de las plantillas de atención.
- Para entender cómo el cerebro se adapta a las nuevas demandas de atención.
Principales métodos:
- Los monos fueron entrenados en una tarea de búsqueda visual que requería el aprendizaje repetido de nuevas plantillas de atención.
- Las grabaciones neuronales se utilizaron para analizar las representaciones de la plantilla en la corteza prefrontal y parietal.
Principales resultados:
- Las plantillas atencionales se representan de manera estructurada a través de la corteza prefrontal y parietal, con representaciones similares para las plantillas perceptualmente vecinas.
- Aprender nuevas plantillas implicó cambios incrementales hacia características recompensadas.
- Las plantillas transforman las características de estímulo en una representación de valor común para la toma de decisiones.
Conclusiones:
- Los hallazgos revelan cómo el cerebro aprende a controlar la atención a través de representaciones neuronales estructuradas.
- Las plantillas de atención facilitan el despliegue flexible de la atención al crear una señal de valor unificada.
- Esta investigación proporciona información sobre las bases neuronales del control de la atención adaptativa.
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