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El acondicionamiento hacia atrás revela flexibilidad en las memorias inhibidoras de la corteza infralímbica
Nura W Lingawi1, Billy Chieng1, R Fred Westbrook1
1School of Psychology, UNSW Sydney, Sydney, Australia.
eLife
|February 10, 2026
Resumen
La corteza infralímbica (IL) almacena recuerdos inhibidores flexibles. La experiencia previa permite que la estimulación de la IL mejore la extinción del miedo, lo que demuestra su papel en el comportamiento adaptativo.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Neurociencia del comportamiento neurológico.
- Neurociencia cognitiva y neurociencia cognitiva.
Sus antecedentes:
- La corteza infralímbica (IL) es crucial para la inhibición del comportamiento.
- El contenido específico de los recuerdos inhibidores dentro de la IL no se entiende bien.
Objetivo del estudio:
- Investigar las condiciones que permiten la recuperación y facilitación de los recuerdos inhibidores en la IL.
- Explorar la flexibilidad y la especificidad de la recuperación de la memoria inhibidora mediada por IL.
Principales métodos:
- Estimulación optogenética en ratas hembras y machos.
- Examinando la extinción del miedo y los paradigmas del condicionamiento.
- Evaluación de la especificidad del estímulo y la independencia del contexto motivacional.
Principales resultados:
- La estimulación IL por sí sola no facilitó la extinción del miedo inicial.
- La extinción previa del miedo o la experiencia de acondicionamiento hacia atrás permitieron que la estimulación de IL mejorara la extinción posterior del miedo.
- Los efectos de facilitación eran específicos del estímulo e independientes del contexto motivacional, ocurriendo a través de diferentes procedimientos inhibidores.
Conclusiones:
- La IL almacena recuerdos inhibidores muy flexibles.
- Estos recuerdos se pueden recuperar y aplicar a través de diversas tareas inhibidoras y contextos motivacionales.
- La IL actúa como un centro central para la aplicación flexible del conocimiento inhibidor, apoyando respuestas adaptativas.
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