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Fear boosts activation of young, immature brain cells
Date:6/14/2011

They then confronted the rats with the same fearful situation or a neutral yet novel context the next day. When they examined the brains, they found that the newborn neurons had been specifically activated by the fearful situation. However, when they destroyed the basolateral amygdala, new neurons were no longer activated in response to the fearful memory.

"The research suggests that newborn neurons play a role not only in the formation of memory, but also in helping to create the emotional context of memory," Kirby said. It also suggests that the basolateral amygdala drives the ability of new neurons to be part of an emotional memory.

The team now plans to see whether other negative stimuli, such as stress and anxiety, similarly cooperate with amygdala activity to alter neurogenesis in the hippocampus.


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Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert  

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