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Un código de representación común para los conceptos de eventos y objetos en el cerebro
Jia-Qing Tong1, Jeffrey R Binder1,2, Lisa L Conant1
1Department of Neurology, Medical College of Wisconsin, Milwaukee, WI, USA.
bioRxiv : the preprint server for biology
|September 2, 2025
Resumen
Las representaciones neuronales de conceptos de objetos y eventos comparten un código común, no categorías distintas. Este hallazgo avanza en la comprensión de la representación conceptual y las interfaces cerebro-computadora.
Área de la Ciencia:
- Neurociencia cognitiva
- Imágenes neurológicas
- Neurociencia computacional
Sus antecedentes:
- Los humanos conceptualizan el mundo a través de objetos y eventos.
- La base neuronal de la representación del concepto de objeto vs. evento no está clara.
- Investigando la distinción categórica frente a los códigos de representación compartidos.
Objetivo del estudio:
- Determinar si las representaciones neuronales de los conceptos de objetos y eventos son categóricamente distintas.
- Investigar la naturaleza del código de representación compartido, en su caso.
- Explorar las implicaciones para las tecnologías de interfaz cerebro-computadora.
Principales métodos:
- Análisis de datos de resonancia magnética funcional (fMRI).
- Análisis del patrón multivoxel (MVPA) de las respuestas neuronales.
- Modelos de decodificación basados en características que utilizan calificaciones experimentales.
Principales resultados:
- Los conceptos de objetos y eventos están representados en patrones superpuestos a través de la corteza de asociación.
- Se identificó un código de representación compartido, efectivo para decodificar ambos tipos de conceptos.
- Las clasificaciones de características experimentales modelaron tanto el código compartido como las diferencias de activación específicas de la categoría.
Conclusiones:
- Las diferencias neuroanatómicas entre las representaciones de objetos y eventos surgen de variaciones cuantitativas en las características fundamentales de la experiencia.
- Un código de representación compartido subyace al procesamiento conceptual de objetos y eventos.
- La caracterización de este código es crucial para el desarrollo de interfaces cerebro-ordenador que decodifican el contenido conceptual.
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