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Representación de la confianza asociada con una decisión por las neuronas en la corteza parietal
Roozbeh Kiani1, Michael N Shadlen
1Howard Hughes Medical Institute, National Primate Research Center and Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. roozbeh@u.washington.edu
Science (New York, N.Y.)
|May 9, 2009
Resumen
Se estudiaron los mecanismos neuronales de la toma de decisiones y la certeza de la elección en monos rhesus. Las mismas neuronas de la corteza parietal que representan las decisiones también codifican la certeza, revelando cómo la confianza influye en las elecciones.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Ciencias Cognitivas Ciencias Cognitivas.
- Investigación para la toma de decisiones.
Sus antecedentes:
- Los mecanismos de toma de decisiones perceptivas están bien estudiados en los primates.
- Los fundamentos neuronales de la certeza de la elección siguen siendo en gran medida desconocidos.
- La confianza en las decisiones ofrece una evaluación gradual de los resultados.
Objetivo del estudio:
- Investigar los mecanismos neuronales de la elección, la certeza en la toma de decisiones.
- Para determinar si la actividad neuronal relacionada con la toma de decisiones también codifica la confianza.
- Comprender cómo la confianza influye en la decisión de comprometerse o optar por no comprometerse.
Principales métodos:
- Los monos rhesus realizaron una tarea de discriminación de dirección con diferentes niveles de dificultad.
- Un subconjunto de ensayos permitió a los monos optar por una recompensa garantizada, revelando la certeza de la elección.
- La actividad neuronal en la corteza parietal se registró durante la toma de decisiones.
Principales resultados:
- Se descubrió que las neuronas en la corteza parietal representan tanto la decisión en sí como el grado de certeza.
- El comportamiento de exclusión voluntaria de los monos se correlacionó con su nivel evaluado de certeza de decisión.
- Esto sugiere una representación neuronal unificada para la toma de decisiones y la confianza.
Conclusiones:
- La corteza parietal juega un papel crucial en la codificación de la decisión y la confianza en esa decisión.
- Las representaciones neuronales de la certeza están integradas con los procesos de toma de decisiones.
- Este hallazgo avanza en nuestra comprensión de la base neuronal de la confianza y el comportamiento de elección.
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