Pilot Intervention With Near Infrared Stimulation

This pilot study tests whether shining near-infrared light (a type of light invisible to the naked eye) on specific areas of the body might improve thinking, memory, and mood in older adults. **You may be eligible if...** - You do not have dementia or mild cognitive impairment (your thinking and memory tests are within normal range for your age) - You are able to give informed consent and use a computer for cognitive tests - You have at least an 8th grade level of education or reading ability - You are willing to be randomly assigned to either the real treatment or a sham (fake) treatment - You can commit to 12 weeks of the intervention plus testing time before and after - Your major medications have been at a stable dose **You may NOT be eligible if...** - You have been diagnosed with dementia or significant memory impairment - You are unable to commit to the full 12-week program Talk to your doctor to see if this trial is right for you.