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Scientists have learned to erase memories

27.10.2022

Controlled sleep deletion of unwanted memories can help many people clear traumatic memories. Some information stored in our brain is not needed by a person, but it is impossible to forget it. Scientists were able to achieve a targeted removal of unnecessary memories.

Scientists have been working for a long time to unravel the secrets of the complex system of the human brain. Recent research has brought them a little closer to this goal.

The memory erasure theory was studied by a group of scientists from the University of York. They began by studying sounds that, during sleep, can enhance or, conversely, minimize the significance of memories. This approach can help many people living with traumatic memories.

Scientists observed 29 people who participated in the experiment. For them, different pairs of words were shown on the monitor, with the first word always being an object, and the second showing some place or person. Participants were shown 60 pairs of words in different compositions: object + person or place. A sample of 120 associations was released.

When several words appeared on the screen, the name of the item was spoken aloud. After that, the associations that had arisen were checked for the tested, they themselves chose a pair of six proposed options. Then, in the laboratory, people fell asleep under the control of scientists, who included an audio recording of 30 words-objects in a certain phase of sleep.

After that, the association test was again conducted. The experiment showed that the ability to recall the first word learned in combination with the word indicating the object increased if the pronunciation of the word-object was called in a dream. And if the word was not called, then the ability to memorize decreased. In addition, the researchers found that the ability to recall a second word along with the same item name was reduced.

Thus, scientists managed to simulate a situation where there are two competing memories and learned how to influence a person so that he forgets one of them.

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