Psychological studies have shown that rehearsal of the same information again and again in the mind accelerates and potentiates the degree of transfer of short-term memory into long-term memory and therefore accelerates and potentiates consolidation. The brain has a natural tendency to rehearse newfound information that catches the mind’s attention. Therefore, over a period of time, the important features of sensory experiences become progressively more and more fixed in the memory stores. This explains why a person can remember small amounts of information studied in depth far better than large amounts of information studied only superficially. It also explains why a person who is wide awake can consolidate memory far better than a person who is in a state of mental fatigue.
One of the most important features of consolidation is that new memories are codified into different classes of information. During this process, similar types of information are pulled from the memory storage bins and used to help process the new information. The new and old are compared for similaritiesand differences, and part of the storage process is to store the information about these similarities and differences, rather than only to store the new information unprocessed. Thus, during modification, the new memories are not stored randomly in the brain but are stored in direct association with other memories of the same type. This is necessary if one is to be able to “search” the memory store at a later date to find the required information.
- Guyton and Hall, Textbook of Medical Physiology (10th Edition)
