Sleep quality, duration improve cognition in aging populations

Maybe turning to sleep gadgets -- wristbands, sound therapy and sleep-monitoring smartphone apps -- is a good idea. A new study of middle-aged or older people who get six to nine hours of sleep a night think better than those sleeping fewer or more hours. Researchers found consistent associations between intermediate sleep durations, high sleep quality and enhanced cognitive performance across diverse populations, which suggests that improving sleep patterns may help reduce the level of cognitiv...