The present invention is directed to novel polypeptides and to nucleic acid molecules encoding those polypeptides. Each push button corresponds to a programmed sound, fulfilling the expectations of the user. The retrieved image pixel data is combined into a shared image. Accordingly, the pharmaceutical composition can be used as a therapeutic agent of degenerative brain disease such as Alzheimer’s disease. Each of said pixels includes sub-pixels that are each provided with a static random access memory and an electro-optical element.