the brain they may not have been used for a long time well they ve been damaged or lost juju disease such as alzheimer s. so if we take letters or words as an analogy for memory information storage and storage deficit were memory is completely lost would be analogous to a book being burned you re never going to get that information back but in a library situation you can imagine a scenario word the book is somewhere in the library but you don t know where it is you don t know how to find it so it s not that you ve lost the information but you ve lost the index you ve lost library index how do you find that information so the question is how can we identify lost memories in a music subjects and how can we find a way of actually retrieving them for those people. researches at this lab at the massachusetts institute of technology have managed to restore some forgotten memories in mind that would genetically programmed to