Can a sound wave boost aging brains? a new trial tests 40 hz tones

This study tests whether listening to a specific 40 Hz sound for one hour a day, five days a week over 12 weeks, can improve memory, brain activity, sleep, and quality of life in older adults with mild cognitive impairment or mild dementia. Half of the participants will receive the active sound stimulation, while the other half will receive a sham (inactive) version, and neither they nor the researchers will know which they got. The goal is to see if this simple, non-invasive approach can help support brain function in people experiencing cognitive decline.