Human memory can be divided into short-term memory and long-term memory, and their neural mechanisms are different. Memorability means that short-term memory can become long-term memory in a very short time, which is indeed possible for some people, but not everyone can do it.
In the past decades, cognitive psychologists have determined that there are two main memory systems in the human brain: one is short-term or "working" memory, which temporarily stores information about several things we are currently considering; The other is long-lasting memory, which can save a lot of information obtained through a lifetime of thoughts and experiences.
Above: Further research divides people's memory into three types. Before short/long memory, a very short memory (actually a function of sensory nerve) is added. These three kinds of memories are interdependent.
These two memory systems are different in providing details of memory: working memory provides clear details of several things we are currently considering, while long-term memory provides more vague pictures or experiences of many different things we have seen. That is to say, although we can keep a lot of things in long-term memory, the details of memory are not always so clear, and are usually limited to the general idea of what we saw or happened.
However, some scientists believe that long-term memory may not be as vague as previously thought. The researchers asked the subjects to try to remember 3000 photos of common objects, such as backpacks, remote controls and toasters, which only appeared for a few seconds at a time. At the end of the viewing phase, the researchers tested their memory of each object by showing them two objects and asking them which one they had seen before. Not surprisingly, even though there are thousands of objects to remember, the participants perform very well (the correct rate is over 90%). Such a high success rate proves that long-term memory has great memory ability. However, the most surprising thing is that the participants' memories of all these items are amazing in detail-even if the differences between the items are very subtle, such as two slightly different toasters, participants can distinguish the differences of the same item in two pictures.
However, although the above research describes human memory, there is a very serious problem in both long-term memory and short-term memory: forgetfulness! In fact, the above two kinds of memories are very fragile on their respective time scales.
Let's see why people forget things.
As early as 1959, scientists conducted the classic experiment of quick forgetting. They asked participants to remember the order of three letters. Then, participants were asked to try to recall a three-letter sequence after counting down different times.
Participants performed poorly in this test. From the three-second countdown to the six-second countdown, half of the original three letters have disappeared from the participants' memories on average. When participants count down to 12 seconds, the letter sequence they can remember is less than 15% of the original memory. Finally, after counting down to 18 seconds, all memories disappear.
The experiment clearly shows the speed at which information is forgotten from short-term memory. So does this mean that what you are reading and what I wrote just floats gently in your brain? In retrospect, do you remember what the first three words of this article are? Need to go back and have a look? O(∩_∩)O~
Above: Brain regions and pathways involved in the formation of short-term memory.
However, psychologists believe that we "forget" information in two different situations:
With the continuous genetic evolution of human beings, everyone has the ability to never forget, but not everyone has the ability to never forget. People have the same brain function from birth, but in the environment of growth and study, because of the different living environment and self-awareness, they have a selective direction to develop their brains, which of course does not include people with congenital brain diseases. The human brain is a big universe. Some people are born with a powerful memory function, while others are relatively weak and exist in unconscious selective amnesia, but these memories are all in the brain, just can't remember them! Just forget, not don't exist.
First of all, it is doubtful whether human beings evolved. No fossils of transitional species between humans and apes have been found. You know, even dinosaur fossils can be found, ape fossils can also be found, and ancient human fossils can also be found, but the transitional species between humans and apes are missing, which only shows that the biological codes of humans and apes are similar, but there is no transitional evolutionary relationship. Remember what people said about Hal? Wolf's draft. More likely, humans and apes are two species that coexist. Apes are one version, and humans are another.
As for why humans don't have the instinct to never forget anything, instinct is puzzling. For example, basic creatures such as bees and ants can naturally complete complex construction work without learning ability and training, and there seems to be pre-written programs in their minds.
People also have instincts, such as cognitive ability. Starting from the most basic cognition, people keep learning, and people's brains always know analogical judgment, which is a unique instinct of human beings.
Generally speaking, there is a feeling that people's instinct and storage ability are a preset and a design that matches people's physical strength and viability.
Therefore, for example, the ability of insects is innate, just like the memory passed down from generation to generation. There are many kinds of fish, and they know what they want when they are born, but people can't learn and never grow up, just like wood and mammals, but people can only eat by learning, but animals can surpass themselves. No matter how they train, they can't go out of line, just like someone has set it up to tell them that you are an animal and can't think too much. It can't be said that people have lost the ability to never forget. People have this ability, such as a thrilling or injured experience, the most beautiful thing you have ever seen and the person who has been saved by the most beautiful person, so people have not lost this function.
Super memory is a disease, which must be cured! There are about 78 patients in the world. They don't have enough memories, consume too much energy, and are overloaded with mental stress, so most people can't afford to play. /a/ 1 18305257 _ 470779/？ pvid = 000 1 15 _ 3w _ a & amp； strategyid=000 14
With the ability to never forget, you may live better. Without the ability to remember, it doesn't mean that you can't live, and you can even live well. Without the survival of the fittest, there is no evolution. Forgetting something may help to lighten the burden on the brain, such as the computer hard disk. If it is not big enough, you need to delete some files regularly to ensure that there is enough space to record more valuable information.
Human history is too long, there are too many things to remember, and the knowledge recorded from the beginning of writing is vast. It's not easy to remember them all. Fortunately, there is also the forgetting function of the brain, so that our limited memory bank will not be constantly supplemented by fresh knowledge. What I want to know is how people's memory is realized and remembered. Where are the records? How did you delete it? What should be forgotten and remembered is that those brain cells are at work? How does it work? Why is my memory so poor? How to improve?
I remember there was an English master in the Super Brain program. His brain seems to have no forgetting function. He said he never forgot anything!
I think the average person's brain can't bear such a large amount of data, and some unpleasant memories are also very harmful to people's spirit, so forgetting itself is a kind of protection for the brain.
If people remember everything, writers will lose their jobs; If people remember everything, files will be unemployed;
If people remember everything, computers will be eliminated;
If everyone remembers it, they have to cancel the college entrance examination.
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