How are memories in the brain produced and reproduced?

It has been found that the parts of the brain that are closely related to memory and movement are the temporal lobe, amygdala, frontal lobe, and thalamus. The temporal lobe is the area of the hearing center of the person, located on the outer edge of the cerebral hemisphere, and it is associated with memory and some of the person's psychomotor activities.

Studies have found that the use of weak electrical currents to interfere with the temporal lobe will cause the subject to recall old events and hallucinate, and patients with temporal lobe damage will have a significant decline in memory, especially long-term memory will be seriously affected.

This is due to the hippocampal structure on the inside of the temporal lobe, which plays a key role in consolidating long-term memory. If the hippocampus is damaged, the patient will have memory impairment, the left hippocampus injury will interfere with the memory of speech, numbers, and phonetic transcriptions, and the right hippocampus injury will interfere with non-verbal categories, such as appearance, location, etc., so some elderly people can't remember the appearance of their children, that is, the hippocampus has suffered damage.

Next is the amygdala, which is the key to feeling, experiencing memory. For example, in winter, when we go to soak in a hot spring, there are gentle songs echoing in our ears, and then massage, the master rubs our shoulders, beats our legs, and helps us relax, whether this feeling is very refreshing, this is the touch (the skin's response to warm water, the response to the master's massage), and hearing (gentle songs) are converted into memories through the amygdala. If you go back to a similar environment, you will feel this way.

If the amygdala is damaged, the person's visual, hearing, and tactile information cannot be effectively gathered, and the person's ability to distinguish is significantly reduced, such as not being able to see clearly, or having obvious dyslexia. In addition, amygdala damage can also seriously affect learning.

This is due to the fact that the amygdala is related to the human reward system, that is, when we learn, for example, after completing a problem, an active reward signal will appear in the brain, which associates the enthusiasm for completing the problem with the reward, which is the motivation, that is, a love of reading, and the learning reward of the amygdala is particularly important. As a result, amygdala damage can cause various cognitive dysfunctions in mentality, learning, and memory.

The memories in the brain are first stored in the brain and then can be reconstructed when they are retrieved.

Experiences form memories in the hippocampus of the brain, and the nerve cells in the hippocampus that hold memories are transformed into memory trace cells. When it is necessary to memorize something, it is first processed by the right brain to form an image, and then the image information is transmitted to the left brain for processing, converted into text information and stored.