New tech can offer relaxation, healing for caregivers and care recipients without leaving home.When my father was failing with Alzheimer's, some of our most tender moments were spent in the car. I'd sign him out of his assisted living facility, and we'd drive past farmland, saltbox homes and cranberry bogs outside Boston. Conversation was limited, but then I'd slip in a Frank Sinatra CD and watch his entire being change as the music entered his brain. A smile moved across his face, his shoulders relaxed, and with both feet tapping, he seemed transported to a 1950's high school dance in Ridgewood, New Jersey.