Coupling neurologic music therapy with immersive virtual reality to improve executive functions in individuals with Parkinson's disease: A Quasi-Randomized Clinical Trial

Parkinson's disease (PD) is one the most common neurodegenerative movement disorder, leading to motor and non-motor symptoms, including deficits in executive functions (EF), memory, visuospatial abilities, and psychomotor speed. Current treatments are primarily symptomatic, involving pharmacological, surgical strategies. Neurologic Music Therapy (NMT) has gained recognition for its effectiveness in neurorehabilitation of PD patients and improving motor and cognitive domains, such as EF. This study combines NMT with the virtual reality (VR) platform Computer-Assisted Rehabilitation Environment (CAREN), offering customizable environments for rhythmic cue practice to provide an innovative approach to Parkinson's rehabilitation.

In our single-blind quasi-randomized controlled trial, forty patients were assigned to either an experimental group (EG = 20) or a control group (CG = 20). Both groups underwent two months of training with CAREN scenarios (three times a week for 24 sessions). The experimental group additionally received NMT applied to the selected scenarios. Participants were evaluated by a neuropsychologist at baseline and immediately after training.

Intra-group analysis showed significant improvements in the EG for MOCA (p = 0.007), FAB (p = 0.008), Stroop Error (p = 0.003), Stroop Time (p < 0.001), and Visual Search (p < 0.001). The CG showed a significant difference only in Stroop Error (p = 0.02).

This pilot study is the first to combine NMT with CAREN in PD patients. Our findings suggest that NMT, within an immersive VR environment, effectively improves cognitive and EF in PD. Music structured within NMT techniques, coupled with advanced audio-visual feedback from VR, offers an innovative and potentially more effective approach for managing cognitive and executive deficits associated with PD.