Evaluating brain modularity benefits of an acting intervention: a discriminant-analysis framework

Area of Science:

• Neuroscience
• Cognitive Psychology
• Gerontology

Background:

• Aging is linked to decreased brain modularity and executive functions like updating, shifting, and inhibition.
• The aging brain retains plasticity, suggesting potential benefits from interventions.
• Broad-based interventions may be more effective for executive function gains than targeted training.

Purpose of the Study:

• To investigate the effects of a 4-week theater-based acting intervention on brain modularity and executive functions in older adults.
• To test the hypothesis that acting interventions can improve brain modularity and executive function in individuals aged 60-89.
• To compare a broad-based acting intervention with an active control group in a randomized controlled trial (RCT) framework.

Main Methods:

• 179 community-dwelling adults (60-89 years) participated in an RCT.
• Intervention group (n=93) enacted scenes; control group (n=86) learned acting history.
• Executive functions and resting-state functional MRI (rs-fMRI) for brain modularity were assessed pre- and post-intervention.

Main Results:

• The acting intervention group showed a significant increase in brain modularity compared to pre-intervention and control groups.
• Improvements in updating task performance were observed in the intervention group.
• Post-intervention updating performance did not significantly interact with increased brain modularity to differentiate groups.

Conclusions:

• A 4-week acting intervention can enhance brain modularity and updating abilities in older adults.
• These improvements are significant as modularity and updating are affected by aging.
• The findings suggest that acting interventions may offer benefits for daily functioning and learning in older age.