A large review of 12 randomized controlled trials involving 926 patients looked at how music affects those with disorders of consciousness. The study compared patients who received music interventions against a control group to see if it helped their recovery levels.
The results showed that the music group had significantly higher scores on several scales used to measure awareness and alertness. Specifically, these patients were more likely to reach certain awakening milestones and showed better scores on the Coma Recovery Scale-Revised. They also showed lower scores on a scale measuring stroke severity.
While the findings are promising, this was a meta-analysis of existing trials. The researchers noted that more high-quality studies are needed to fully understand how music works and its specific effects. For now, it may be a safe and non-invasive way to support rehabilitation care for patients with these conditions.