Study shows listening to favourite music improves brain function
On Repeat: Listening to favourite music improves brain function in Alzheimer’s patients
Researchers at the University of Toronto and Unity Health Toronto have demonstrated that repeated listening to personally meaningful music induces beneficial brain plasticity in patients with mild cognitive impairment or early Alzheimer’s disease.
“Whether you’re a lifelong musician or have never even played an instrument, music is an access key to your memory, your pre-frontal cortex,” says Michael Thaut, senior author of the study.
“It’s simple — keep listening to the music that you’ve loved all your life. Your all-time favourite songs, those pieces that are especially meaningful to you — make that your brain gym.”
Here is the researchers’ recent article about the study:
Changes in the brain’s neural pathways correlated with increased memory performance on neuropsychological tests, supporting the clinical potential of personalized, music-based interventions for people with dementia.
A multi-modal study, published in the Journal of Alzheimer’s Disease stated:
“We have new brain-based evidence that autobiographically salient music — that is, music that holds special meaning for a person, like the song they danced to at their wedding — stimulates neural connectivity in ways that help maintain higher levels of functioning,” says Michael Thaut, senior author of the study.
“Typically, it’s very difficult to show positive brain changes in Alzheimer’s patients. These preliminary yet encouraging results show improvement in the integrity of the brain, opening the door to further research on therapeutic applications of music for people with dementia — musicians and non-musicians alike.”
The research team reported structural and functional changes in neural pathways of study participants, notably in the prefrontal cortex, the brain’s control centre where deep cognitive processes occur. The researchers showed that exposing the brains of patients with early-stage cognitive decline to autobiographically salient music activated a distinct neural network — a musical network — comprised of diverse brain regions that showed differences in activation after a period of daily music listening.
They also observed differences in the brain’s connections and white matter, providing further evidence of neuroplasticity.
“Music-based interventions may be a feasible, cost-effective and readily accessible intervention for those in early-stage cognitive decline,” says Corinne Fischer, lead author and associate professor of psychiatry at Temerty Medicine.
“Existing treatments for Alzheimer’s disease have shown limited benefit to date. While larger controlled studies are required to confirm clinical benefits, our findings show that an individualized and home-based approach to music-listening may be beneficial and have lasting effects on the brain.”
For the study, 14 participants — eight non-musicians and six musicians — listened to a curated playlist of autobiographically relevant, long-known music for one hour a day over the course of three weeks. Participants underwent structural and task-based functional MRI before and after the listening period to determine changes to brain function and structure. During these scans, they listened to clips of both long-known and newly composed music. Heard one hour before scanning, the new music was similar in style yet held no personal meaning.
When participants listened to the recently heard, newly composed music, brain activity occurred mainly in the auditory cortex, centred on the listening experience. However, when participants listened to long-known music, there was significant activation in the deep-encoded network of the prefrontal cortex, a clear indication of executive cognitive engagement.
There was also strong engagement in subcortical brain regions, older areas minimally affected by Alzheimer’s disease pathology.
Read the story on Toronto University’s website