Targeting Cognition and Behavior Post-Stroke: Combined Emotional Music Stimulation and Virtual Attention Training in a Quasi-Randomized Study

TL;DR

A study found that adding personalized emotional music to virtual reality rehabilitation improved cognitive and emotional outcomes in stroke patients better than virtual reality alone.

Contribution

This study demonstrates that combining emotional music stimulation with virtual reality rehabilitation yields significant improvements in cognition, mood, and function in chronic stroke patients.

Findings

The experimental group showed large effect improvements in cognition, motivation, depression, anxiety, heart rate, and disability.

The music group outperformed controls on cognition, motivation, and disability at post-treatment.

Heart rate reductions correlated with improvements in depression and anxiety.

Abstract

Background: Emotionally salient music may enhance attention-focused rehabilitation, yet concurrent music plus virtual-reality programs in chronic stroke are largely untested. We assessed whether personalized emotional music stimulation (EMS) layered onto a standardized virtual reality rehabilitation system (VRRS) augments cognitive, affective, physiological, and functional outcomes. Methods: In a quasi-randomized outpatient trial, 20 adults ≥ 6 months post-ischemic stroke were allocated by order of recruitment to VRRS alone (control, n = 10) or VRRS+EMS (experimental, n = 10). Both groups performed 45 min of active VRRS cognitive training (3×/week, 8 weeks), while the EMS group received approximately 60 min sessions including setup and feedback phases. Primary outcomes were cognition and global function; secondary outcomes were intrinsic motivation, depression, anxiety, and heart rate. Non-parametric tests with effect sizes and Δ-scores were used. Results: The experimental group improved across all domains: cognition (median +4.5 points), motivation (median +54 points), depression (median −3.5 points), anxiety (median −4.0 points), heart rate (median −6.35 beats per minute), and disability (median one-grade improvement), each with large effects. The control group showed smaller gains in cognition and motivation and a modest heart-rate reduction, without significant changes in mood or disability. At post-treatment, the music group outperformed controls on cognition, motivation, and disability. Change-score analyses favored the music group for every endpoint. Larger heart-rate reductions correlated with greater improvements in depression (ρ = 0.73, p < 0.001) and anxiety (ρ = 0.58, p = 0.007). Conclusions: Adding personalized emotional music to virtual-reality attention training produced coherent, clinically relevant gains in cognition, mood, motivation, autonomic regulation, and independence compared with virtual reality alone.

Figures