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La evitación del apego muestra patrones cerebrales diferentes en pacientes con trastorno depresivo mayor (TDM) en comparación con los controles sanos (HC). Estas diferencias en la estructura cerebral y la reactividad emocional pueden informar la psicoterapia para el TDM.

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Área de la Ciencia:

  • La neurociencia
  • La psiquiatría
  • Psicología

Sus antecedentes:

  • La evitación del apego es un factor de riesgo conocido para el trastorno depresivo mayor (MDD).
  • La evitación del apego es común tanto en individuos sanos como en aquellos con TDM.
  • Comprender la base neuronal de la evitación del apego en el TDM es crucial.

Objetivo del estudio:

  • Investigar las diferencias en los correlatos cerebrales estructurales y funcionales de la evitación del apego entre los pacientes con TDM y los controles sanos (HC).
  • Identificar regiones y redes cerebrales específicas asociadas con la evitación del apego en el contexto del TDM.

Principales métodos:

  • Setenta y seis pacientes con TDM y 76 HC fueron evaluados para evitar el apego utilizando el Cuestionario de Escalas de Relación.
  • Los participantes se sometieron a resonancias magnéticas estructurales y funcionales durante una tarea de procesamiento de emociones.
  • Los análisis de covarianza de todo el cerebro (ANCOVA) examinaron los efectos de interacción de evitación de apego del grupo x.

Principales resultados:

  • Se encontraron efectos de interacción significativos para el volumen de materia gris en la amígdala derecha y el complejo hipocampo-parahipocampo.
  • También se observaron efectos de interacción significativos en la reactividad a las caras negativas en el giro frontal, caudado e ínsula.
  • Estos hallazgos indican patrones neuronales distintos relacionados con la evitación del apego en pacientes con TDM frente a HC.

Conclusiones:

  • La evitación del apego se asocia con patrones cerebrales estructurales y funcionales únicos en pacientes con TDM en comparación con HC.
  • Estas diferencias neuronales pueden reflejar diferentes sensibilidades a las señales socioemocionales y posibles déficits de habilidades en el TDM.
  • Los hallazgos sugieren que la psicoterapia podría dirigirse a estos correlatos neuronales específicos en pacientes con TDM.