According to the scientific report of the University of Southern California, they implanted electrodes in the hippocampus of experimental rats, trained them to perform a series of lever operations and give corresponding rewards, and recorded the brain activities of experimental rats through the electrodes  The research showed that the hippocampus can convert short-term memory into long-term memory  Scientists then injected a substance into the hippocampus of experimental rats, Blocking the neural signals related to long-term memory  The observation shows that this makes the experimental mice forget their training  However, when the researchers input signals to the brain of the experimental mice with electrodes to simulate the brain activities during training, the experimental mice temporarily remember the correct operation sequence
However, if the input is a disturbed signal, there is no such effect
If the hippocampus of the brain of the experimental rats is damaged, they will not be able to remember what they have just learned.