Favorite songs trigger distinct brain activity in dementia patients

Researchers mapped brain responses to personally meaningful music in people with dementia. Favorite music produced stronger responses than neutral music, and the patterns differed between dementia types. The work compared Alzheimer's disease and frontotemporal dementia, indicating music processing may be relatively preserved in Alzheimer's but affected in FTD.

Dementia includes multiple disorders where brain cells are damaged and die, such as Alzheimer's disease and frontotemporal dementia. No cure exists, so researchers are examining which functions remain relatively intact and how non-drug approaches like music therapy might support well-being, though benefits may vary by dementia subtype.

To study this, scientists used fMRI to compare brain activity in people with Alzheimer's, people with FTD, and healthy volunteers. Participants chose personally meaningful music, which was contrasted with neutral music. Because MRI scanners are noisy, the team alternated brief scans with short listening periods to capture responses. Favorite music produced stronger activity than neutral music.