Human memory involves an encoding process used to transform information to be stored for later use, similar to encoding on a computer. We take information and transform it into something meaningful such as "an association with an existing memory, an image, or a sound." After this encoding process, the brain stores the information to hold onto via a physiological change in the memory. Finally, after memories have been stored we retrieve that memory and reverse the encoding process. "In other words, return the information to a form similar to what we stored.