According to AARP, almost 90 percent of seniors would like to stay in their home as they age. This idea of aging in place -- growing older where you already live, typically not in a health-care environment -- continues to be a popular choice among seniors able to live without a lot of assistance. However, as this population ages in homes that haven't been designed for their lifestyles, there are considerable risks to elderly people's health and safety. Many seniors aging in place may not have access to caretakers or health-care professionals on a day-to-day basis. Accidents and falls are a major concern for people living alone.

Your brain is a strange three-pound lump in your head that also happens to determine your personality, control your movements, and hold all of your hopes and dreams. Neuroscientists have been mapping the brain for centuries to try to tease apart its inner workings. But people are complicated, and so are brains--intricate bits of biology packed with neurons and axons and all the synapses that tie them together. That hasn't stopped neuroscientists from trying. Just like regular maps, brain maps are useful points of reference.