Music-induced cognitive change and whole-brain network flexibility: a pilot study

Area of Science:

• Neuroscience
• Cognitive Science
• Gerontology

Background:

• Cognitive impairment is a risk factor for Alzheimer's disease and related dementias.
• Older adults are increasingly susceptible to cognitive decline.
• Music interventions show promise for preserving cognitive function in older adults.

Purpose of the Study:

• To investigate the neurobiological underpinnings of music-related cognitive changes.
• To examine if music creativity alters whole-brain network indices (modularity and flexibility).
• To determine if music's cognitive benefits are moderated by whole-brain network indices.

Main Methods:

• A 6-week music creativity intervention was compared to a no-treatment control in 52 older adults.
• Resting-state fMRI and the Montreal Cognitive Assessment were used at baseline and follow-up.
• Analysis focused on changes in brain network modularity and flexibility and their relationship with cognitive improvements.

Main Results:

• The music intervention did not significantly alter network modularity or flexibility.
• Cognitive improvements from music creativity were observed only in participants with higher baseline network flexibility.
• This suggests baseline brain network dynamics influence music's cognitive benefits.

Conclusions:

• Dynamic brain networks, characterized by flexibility, may be crucial for realizing cognitive benefits from music interventions.
• This study identifies a potential neural mechanism explaining individual differences in response to music creativity.
• Findings highlight the importance of brain network properties in music-based cognitive enhancement strategies for older adults.