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Tuesday, December 01, 2009

NEW LONG LASTING SYNAPSIS AFTER REPEATED TRAINING





According to studies carried out by Tonghui Xu, Theresa Jones, Yi Zuo and others (University of California, Santa Cruz, USA), new motor learnings acquired for repetitive practices persist long time, even after having concluded the training. After analyzing the training of the forearm of transgenic mice for certain tasks, the researchers concluded that such practices drove to quick formation of post synáptic connections (in 1 hour), in pyramidal contralateral motor brain cortex neurons, the same ones that were stabilized during later trainings, forming long lasting synapsis even after 4 months, without lost of previous knowledge.

Small daily sensitive experiences leave their print in synaptic networks of brain’s mices. Different motor practices were coded by different synapsis sets. Good news for humans affected by strokes because these knowledge will allow them to recover its lost motor functions after intensive and sustained practices of daily rehabilitation (12 hours per day).

NUEVAS SINAPSIS ADQUIRIDAS MEDIANTE ENTRENAMIENTO

Según estudios realizados por Tonghui Xu, Theresa Jones, Yi Zuo y otros (University of California Santa Cruz,USA), los aprendizajes motores adquiridos por practica repetitiva persisten largo tiempo, incluso después de haber finalizado el entrenamiento. Tras analizar el entrenamiento del antebrazo de ratones transgénicos para determinadas tareas, los investigadores concluyeron que tal practica condujo a la rápida formación de conexiones post sinápticas (en 1 hora), en neuronas de la corteza motora piramidal contralateral, las mismas que fueron estabilizadas durante posteriores entrenamientos, formando sinapsis motoras durables aun despues de 4 meses, sin perdida de conocimientos previos.

Las pequeñas experiencias sensitivas diarias dejan sus huella en las redes sinápticas del cerebro de ratones. Practicas diferentes fueron codificadas por diferentes sets de sinapsis. Una buena noticia para humanos afectados por accidentes cerebrovasculares ya que les permitirá recuperar sus funciones motoras perdidas tras practicas intensivas y sostenidas de rehabilitacion diaria (12 horas por dia).

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