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Updated: Sep 10, 2025

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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.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|August 26, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Las representaciones neuronales de conceptos de objetos y eventos comparten un código común basado en características experienciales, no en categorías distintas. Este hallazgo avanza en la comprensión de la representación semántica y las interfaces cerebro-computadora.

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Área de la Ciencia:

  • La neurociencia
  • Ciencias cognitivas
  • Psicolingüística

Sus antecedentes:

  • Los humanos conceptualizan el mundo usando conceptos de objetos y eventos.
  • La base neuronal para distinguir los conceptos de objeto y evento no está clara.
  • Investigar códigos neuronales compartidos o distintos es crucial para comprender la representación semántica.

Objetivo del estudio:

  • Para determinar si las representaciones neuronales de los conceptos de objetos y eventos son categóricamente distintas o comparten un código común.
  • Analizar los datos de resonancia magnética funcional (fMRI) de los participantes que califican los conceptos de objetos y eventos.
  • Probar un modelo basado en características para decodificar el contenido conceptual de la actividad neuronal.

Principales métodos:

  • Se utilizaron imágenes de resonancia magnética funcional (IRMf) para recopilar datos sobre la actividad cerebral.
  • Se aplicó el análisis de patrones multivoxélicos (MVPA) a los datos de IRMf.
  • Se desarrolló y probó un modelo basado en características, utilizando calificaciones de características experimentales.

Principales resultados:

  • Los conceptos de objetos y eventos están representados en patrones superpuestos a través de la corteza de asociación.
  • Un código de representación compartido, basado en características experimentales, subyace a ambos tipos de concepto.
  • Este código basado en características decodificó con éxito conceptos de objetos y eventos en regiones cerebrales relevantes.

Conclusiones:

  • Las diferencias neuroanatómicas entre las representaciones de objetos y eventos surgen de variaciones cuantitativas en la distribución de características.
  • Un código de representación compartido basado en características experimentales explica la codificación neuronal de diversos conceptos semánticos.
  • Los hallazgos apoyan el desarrollo de interfaces cerebro-computadora para decodificar el contenido conceptual de la actividad neuronal.