Why is the older the better the memory?

When age is high, people face a reality, that is, memory becomes more and more difficult. However, a question is not everyone answered clearly that, why, the older the memory of people is, the less so?

Every morning we can park our car at a parking lot, but unless we park at a certain location every time, after 8 hours we will have to spend a lot of time remembering them. We put it in row 2 or row 5.

Or in a conference, we are introduced to new partners, something before shaking hands we almost forgot the name of that person already. For this we just have to forcefully shrug and comfort ourselves: The hard drive in my head is already full, there is no way to receive new materials that are rushing like that.

In the elderly, the reception of new information becomes difficult.

Scientists at the Johns Hopkins Hospital neurology found that the main problem is that our brain does not stop aging and almost does not put these news into new news . Because the path to the hippocampus (storage area of ​​memory in the brain) is aging. As a result, the brain is no longer accurate in remembering new facts, leading to chaos.

Professor Michael Yassa of Johns Hopkins 'Krieger Faculty of Science and Arts said:' We use brain mapping techniques to conduct research on the features and complete structures of the brain and us. found that as the age increased, the decline of the Hippocampus also increased, and also found that the transmission of signals between regions in the cerebrum was reduced. '

'The older we are, the easier it is to experience the impact of old memories. In other words, when encountering circumstances that are similar to past experiences, such as parking, our brains often remember images in memory without including new information. . What about the results? We cannot remember where the car was parked, and will have to go back and forth in the parking lot to find '.

Yassa also said that this is partly due to the older people want to remember past memories, because compared to remembering new knowledge, remembering memories is much faster.

Yassa and her team used magnetic beads to scan the brains of 40 people including college students and the elderly (aged 60-80). When scanning, they ask each person to see pictures of commonly used items, such as radishes, test tubes, tractors and bring them into 'indoor' and 'outside' items.

The results show that, for older people with completely different images, it is possible to classify correctly, the more similar the objects are, the more difficult it is to complete this classification for the hyppocampus. . Young people, the hyppocampus region put those images into new news to handle.

Yassa and his colleagues also argue that the lack of capacity to distinguish old people 'similar' information is related to the 'drill bit' . 'Drill line' works to bring news from other areas to the hypocampus. As people age, the pathway becomes slow and the hypocampus makes it more difficult to place similar splits that are stored in the brain.

This result will be great for treating dementia in the elderly (Alzheimer's). The next step of the research team is to judge the method of using drugs to treat clinically effective Alzheimer's patients in the early stages.

He said basically we will use drugs to fully influence the communication pathways to the hypocampus. If the use of the drug can prolong the aging of the pathway and reduce the hypothyroidism of the hypocampus, this can prolong the development of Alzheimer's disease in the elderly for 5 to 10 years.