Sleep-dependent Learning in Aging

This study is investigating how sleep helps the brain learn and retain new information in people of different ages (from young adults to older adults), in order to better understand how sleep-based memory processes change as we get older. **You may be eligible if...** - You are between 18 and 80 years old - You are a generally healthy sleeper - You have not been diagnosed with a sleep disorder or a neurological condition **You may NOT be eligible if...** - You have been previously diagnosed with any sleep disorder, such as sleep apnea or restless legs syndrome - Your overnight sleep study shows significant breathing problems, limb movements, or very poor sleep quality - You have a history of a neurological illness or brain injury - You typically sleep fewer than 5 hours or more than 9 hours per night - You work night shifts or are unable to keep a regular sleep schedule during the study - You are currently taking medications that affect sleep, mood, or brain function (including recreational drugs) Talk to your doctor to see if this trial is right for you.