To write, take, walk, talk is a part of our daily. Our motor ability is used to change depending on our environment and our skill, acquired thanks to our experience, learnings, and according to our age. We strive to find optimal solutions, to be more performants, more efficient. But we must be able to discern to act well and act to better discern. This « perception-action » coupling is the basis of the organization of motor control. Human can discern through several sensory systems (Visual, auditory, proprioceptive) intrinsic informations, coming from his own body, and extrinsic informations, from his environment. All of these informations are in the service of the movement and actions of daily life through the cognitivo-motor processes: of prediction, estimation and motor planning. To question these processes in aged people, weakened by mild cognitive impairment related to Alzheimer's disease, first allow to better understand their adaptation and compensatory capacities faced to this pathological aging. These preventive interventions represent a source of major interest, especially in the preservation of functional independence of vulnerable old people.These works of thesis propose development of tools for stimulating and strengthening cognitive-motor processes. It is clearly about engaging the perception-action coupling through implicit motor exercises benefiting the acquisition of new training and strengthen the process of adaptation and compensation during the progression of Alzheimer’s disease. So many of these processes stimulation exercises will be presented to better know the components relates to the action.