Alzheimer’s disease or related disease has the effect of gradually deleting the codes and conventions necessary for digital communication, thereby undermining the language capacities of those affected. Families and caregivers find themselves unseeded, unable to communicate with the patients and perceive the person behind the silence of words. However, the activities of the sensorimotor system are maintained, thus enhancing analogue communication. Using this non-verbal language, people with Alzheimer’s or related disease still communicate and express a lot. We should be aware of this. This book describes a series of gestures and attitudes that unreservedly testify to the fact that as far as the person in his illness is, she is well present in the world, with a constant desire to communicate with you. The assessment of quality of life in services involves the observation, identification and analysis of non-verbal behaviours of residents: Sémacorps ©, a software designed to process this various information, can be downloaded in addition to this book.