2? Memorizing: When an effective short-term memory pathway is formed, if the relevant brain cells are repeatedly stimulated, these cells will stimulate the surrounding cells, thus widening the memory path. The cells around the active cells are moderately active cells, and the synaptic proliferation and degeneration speed of these middle active cells is one order of magnitude longer than that of the active cells. When these cells establish an effective memory pathway, the memory can be maintained for a long time, thus realizing memorization.
3.? Remember: When an effective medium-term memory pathway is formed, if you continue to stimulate the relevant medium-term memory brain cells repeatedly, these cells will stimulate the surrounding cells, thus further widening the memory path, while the periphery of the middle-active cells is inert brain cells, and the synaptic proliferation and degeneration speed of these inert brain cells is one order of magnitude longer than the cycle of the middle-active cells. When these cells establish an effective memory pathway, the memory can be maintained for a long time, thus realizing remembering.
4.? Permanent memory: No memory can be permanent. The so-called "permanent memory" is only relative to a person's lifetime. After remembering it, if you continue to consolidate the stimulus repeatedly, more and more inert cells will participate in the memory pathway, thus further prolonging the memory and realizing the "permanent memory" relative to a person's life.
The essence of memory is the synaptic proliferation of brain cells, while the essence of initial memory is the decrease of synaptic threshold of active brain cells responsible for short-term memory. When a large number of contents are memorized at one time, the short-term memory cells of the brain (originally few in number) have reached a relatively saturated excited state, and it takes time to stimulate the synaptic proliferation of active brain cells to form memories.
If we continue to remember the same kind of different contents at this time, it will disrupt the synaptic proliferation process, and the contents recorded first will not be fixed, thus the memory effect will become worse. In addition, when we remember a lot, we will consume the nutrients needed for memory. If the consumption is too large, the demand will be in short supply, which will also affect the efficiency of memory.