ABSTRACT
Memory is usually studied and commonly represented as an individual faculty, allowing past information (coming from external environment through senses, or deriving from internal activities such as thoughts, fan tasies, or mental images) to be recalled when the original stimulus has dis appeared from current experience. It may therefore be conceived as a mental link between past perceptions and current states of mind. Refer ring to this first definition, similar to many ideas of memory that arise spontaneously to mind, the aim of this chapter is twofold.