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Variabilidad del comportamiento a través de la elección estocástica y su control por la corteza cingulada anterior.

Dougal G R Tervo1, Mikhail Proskurin1, Maxim Manakov1

  • 1Howard Hughes Medical Institute, Janelia Research Campus, 19700 Helix Drive, Ashburn, VA 20147, USA.

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Las ratas cambian de la toma de decisiones estratégicas a un modo estocástico cuando se enfrentan a competidores imbatibles. Este cambio de comportamiento, controlado por la entrada del locus coeruleus a la corteza cingulada anterior (ACC), permite la exploración bajo incertidumbre.

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Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Ciencias del comportamiento Ciencias del comportamiento.
  • La neurociencia computacional es una neurociencia computacional.

Sus antecedentes:

  • Los animales suelen utilizar las experiencias pasadas para optimizar las decisiones.
  • Sin embargo, la exploración y la imprevisibilidad también son cruciales para la supervivencia.
  • Los mecanismos neuronales que subyacen al cambio entre estas estrategias de comportamiento no se comprenden completamente.

Objetivo del estudio:

  • Para investigar cómo las ratas cambian entre los modos de comportamiento estratégico y estocástico.
  • Para identificar los circuitos neuronales que controlan esta flexibilidad conductual.
  • Comprender el papel de la corteza cingulada anterior (ACC) y el locus coeruleus (LC) en la toma de decisiones bajo incertidumbre.

Principales métodos:

  • Experimentos de comportamiento con ratas que se enfrentan a competidores virtuales.
  • Perturbaciones del circuito en ratas transgénicas.
  • Registros electrofisiológicos y manipulaciones optogenéticas.
  • Análisis de las estrategias de comportamiento y la actividad neuronal en el ACC y LC.

Principales resultados:

  • Las ratas emplean estrategias históricas y basadas en modelos contra competidores predecibles.
  • Las ratas cambian a un modo estocástico, ignorando los resultados, cuando se enfrentan a competidores impredecibles.
  • Este interruptor está mediado por la entrada del locus coeruleus a la corteza cingulada anterior (ACC).
  • La supresión del compromiso del ACC se observa durante el comportamiento estocástico.

Conclusiones:

  • El cerebro puede cambiar entre optimizar el comportamiento basado en la experiencia y adoptar estrategias impredecibles.
  • La entrada del locus coeruleus (LC) a la corteza cingulada anterior (ACC) controla esta flexibilidad conductual.
  • La modulación noradrenérgica de la salida del ACC permite la toma de decisiones adaptativas bajo la incertidumbre ambiental.