The human mind collects and preserves information to guide behavior, the few preserved only for a few seconds or fractions of a second other for several years or for life. Piece of information to become a memory trace, must first be encoded, that is represented by a code. Once coded, the information must be preserved in a warehouse or mental space, said step of maintaining. A messy stock, like a library without archive is inefficient and the same goes for the memories. They allow you recall, the recovery stage, the stored information and, if they work well for instant recall them and the most useful form. We have two memory models, short term and long term. This memory architecture, produces an interface between us and the time, namely the passing of events that has figuratively the shape of a funnel. Many knowledge about memory were already present in classical antiquity, long before the birth of experimental psychology.

The interest in the ability to remember and to strengthen it led to the development of practical strategies that mnemonics designed and developed to lead to improved performance in mnemonic tasks. Among the verbal techniques they are used rhymes, acronyms, the acrostics, while the most important verbal system is phonetic.

Rima, the easiest and well known system to store the info completely unconnected.

Acronym, an artificial word created with the initial letter of a series of words that you want to remember, examples like Cee, Onu, Spa.

Acrostic, sentence in which the first letters of each word provide the suggestion for the recovery of specific information.

Phonetic complex system with a first phase of learning, and can be applied to a broader range of content. Among the visual systems we include a mnemonic loci, which boasts an interesting history. It is believed that the intuition of mnemonics date back to the poet Simonide, who lived around 500 b.C. Cicerone  was said that Simonide had been invited to a banquet to narrate poems in honor of the landlord, but after an altercation was invited to leave the house.

Shortly after the roof collapsed house, killing all guests making it difficult to recognize them.

Thanks to the visual memory of the poet were able to provide the appropriate recognition. The ease of using the visual memory gave rise to this mnemonics, which consists of imagining an ordered series of points inside which store things to be stored.