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Documentary Year Zero; or, A Century of Memory | International Documentary Association

Uppsala University Summary: Newly formed emotional memories can be erased from the human brain, according to new research. The findings may represent a breakthrough in research on memory and fear.

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This is shown by researchers from Uppsala University in image meet new study now being published by the academic journal Science. When a person learns something, a lasting long-term memory is created with the aid of a process of consolidation, which is based on the formation of proteins.

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When we remember something, the memory becomes unstable for a while and is then restabilized by another consolidation process. In other words, it can be said that we are not remembering what originally happened, but rather what we remembered the last time we thought about what happened.

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By disrupting the reconsolidation process that follows upon remembering, we can affect the content of memory. In the study the researchers showed subjects a neutral picture and simultaneously administered an electric shock.

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In this way the picture came to elicit fear in the subjects which meant a fear memory had been formed. In order to activate this fear memory, the picture was then shown without any accompanying shock.

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For one experimental group the reconsolidation process was disrupted with the aid of repeated presentations of the picture. For a control group, the reconsolidation process was allowed to complete before the subjects were shown the same repeated presentations of the picture. In that the experimental group was not allowed to reconsolidate the fear memory, the fear they previously associated with the picture dissipated.

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In other words, by disrupting the reconsolidation process, the memory was rendered neutral and no longer incited fear. At the same time, using a MR-scanner, the researchers were able to show that the traces of memory of men global search memory also disappeared from the part of the brain that normally stores fearful memories, the nuclear group of amygdala in the temporal lobe.

Ultimately the new findings may lead to improved treatment methods for the millions of people in the world who suffer from anxiety issues like phobias, post-traumatic stress, and panic attacks,' says Thomas Ågren.

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Note: Content may be edited for style and length. Journal Reference: T. Agren, J. Engman, A. Frick, J. Bjorkstrand, E. Larsson, T.

Furmark, M. Science, ; : DOI: