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Can you remove the fear?
A new study from the University of Uppsala (Sweden) shows that, if it interferes with fear memory at the right time and these memories are recent, can weaken its impact onthe brain. This finding has already been tested in mice.
Scientists have long known that the amygdala is a critical structure to centralize fear and long-term storage. As he explained to SINC ThomasAgren, coauthor of the study published in the journal Science, this research has achieved "demonstrate that it is possible to erase the traces of the fearful memories in memory of those tonsils andweaken to disrupt reconsolidation period in the brain. "
Agren and his team used a technique of functional MRI to observe the effects of fear in people, and found that, after a traumatic impact, hismemory and reconsolidation are set in the amygdala, as happened with the mice. "Our results imply that a mechanism of memory upgrade that has been preserved in many species through its evolution, andamygdala of the brain would be the epicenter of the formation of such traumatic memories," says Thomas.
To test whether the deletion process was the same in humans, the team of scientists analyzed thebehavior of a group of people who were presented with several images that caused fear. To activate memories these photographs were shown repeatedly to stop the process of consolidation.
Disruptingreconsolidation
"The subjects are aware showed up the first day they received the stimulus that produced the shock. Within five days of the experiment, and showed no fear reactions to disruptreconsolidation process, since the memory was neutral and did not incite fear, "says the researcher.
The work showed that this update mechanism of memory in the brain may be interrupted so that the amygdala isno longer reacting to fear. "Why a memory becomes unstable unclear. Possibly an update mechanism of memory that helps us to add new information to memories or change their emotional value,...