Sensory stimulation is anything that effects one of the five senses (sight, hearing, smell, taste, and touch), and also the sense that gives us a sense of location and balance. We interact with the world through our senses. Sounds, colors, tastes and smells all effect the way we think and feel. The same is true for the person with Alzheimer's disease. Appropriate sensory stimulation has been found to decrease agitation and aggression, calm restlessness, and successfully treat sleep disorders. These are all common behavioral symptoms of Alzheimer's.