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Thursday 23 February 2012
New Connections Between Brain Cells 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 inNature on February 19 (advance online publication). Led by researchers at the University of California, Santa Cruz, the study reveals details of how brain circuits are rewired during the formation of new motor memories. 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....read more>>>...