Wednesday, February 22, 2012

New Brain Connections Form in Clusters During Learning

New connections between brain cells emerge in clusters in the brain as animals learn to perform a new task, according to a study published in Nature...The researchers studied mice as they learned new behaviors, such as reaching through a slot to get a seed. They observed changes in the motor cortex, the brain layer that controls muscle movements, during the learning process. Specifically, they followed the growth of new "dendritic spines," structures that form the connections (synapses) between nerve cells. more

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