memoria-cerebro-270Investigadores del Conicet descubrieron el mecanismo que regula la durabilidad de los recuerdos en la memoria. Una ayuda contra el Mal de Alzheimer.

nvestigadores argentinos y brasileños que trabajan en forma conjunta en el Conicet descubrieron cuál es el mecanismo cerebral que regula la durabilidad de los recuerdos en la memoria, lo que podría ayudar a personas con mal de Alzheimer, informaron este sábado fuentes oficiales.

El trabajo concluyó que una sustancia denominada dopamina activa señales celulares en una región del cerebro llamada hipocampo, que junto a otras regiones del sistema nervioso se encarga de la formación de las memorias en las primeras horas luego de vivir una experiencia.

«Si lo que uno aprende o experimenta es importante o novedoso para uno, la dopamina se pone en juego y activa al hipocampo para que guarde mejor esa memoria. Si lo que uno aprende o experimenta no es novedoso, la dopamina no activa al hipocampo y el recuerdo se desvanece», explicó el especialista argentino Jorge Medina.

Los científicos ahora estudian los mecanismos para lograr que los recuerdos sean más o menos duraderos, detalló Medina, uno de los expertos a cargo de la investigación, que comenzó hace dos años y cuyas conclusiones fueron publicadas en la revista Science.

«Probamos que si actuamos dentro de las 12 horas posteriores a la vivencia de la experiencia y activamos el mecanismo que hace que la dopamina actúe sobre el hipocampo, podemos hacer que un recuerdo dure menos o más tiempo en la memoria», enfatizó el especialista y aclaró que «no apuntamos a cambiar el contenido de los recuerdos, sino a hacerlos duraderos».

«Esta investigación tiene impacto en la psiquiatría, psicología y está orientada hacia la mejora del individuo», teniendo en cuenta «los aspectos éticos para no caer en la manipulación de la memoria», explicó el Conicet.

Medina trabajó en la investigación junto a los científicos brasileños Janine Rossato y Lía Bevilaquq y sus coterráneos Iván Izquierdo y Martín Cammarota.

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