[Use of immersive virtual reality for cognitive rehabilitation of patients with brain injury]

Virtual reality (VR) is a therapeutic tool that is widely used in the cognitive rehabilitation of brain-damaged patients. Depending on the degree of immersiveness, a distinction can be made between non-immersive, semi-immersive and immersive VR. Studies assessing the utility of VR have focused on the non-immersive and semi-immersive modes. Little evidence is available on the effectiveness of immersive VR.

To describe the characteristics, methodological quality and main results of studies that have applied immersive VR programmes in the cognitive rehabilitation of brain-damaged patients.

Following the PRISMA guidelines, a bibliographic search was conducted for studies published in the PubMed and PsycINFO databases. The methodological quality of the articles that met the selection criteria was assessed using the PEDro scale.

After applying the inclusion and exclusion criteria, of the 369 articles of potential interest, five met the eligibility criteria. One of them was a randomised clinical trial (with acceptable/good methodological quality). Three were studies with pre- and post-treatment measures and one was a single case study, all four of them displaying poor methodological quality.

According to the results obtained, there is no evidence of the effectiveness or utility of immersive VR in cognitive rehabilitation in brain-damaged patients. This finding is explained by the lack of studies with a methodological design that allows for the generation of quality evidence rather than because the results obtained in the articles analysed are negative or inconclusive.