I. Introduction
Reviewing the literature, we found works related to the use of brain-computer interfaces (BCI) to measure brain activity, represented in the levels of concentration and meditation. We can say that the level of attention is the capacity that the person has to be focused on a certain action and the level of meditation is related to the distraction that the person presents. We found applications where this technique is used to evaluate brain activity at the time of performing rehabilitation exercises (1); when performing activities related to video games (2); when carrying out rehabilitation therapies using virtual reality techniques (3), as well as in conducting online classes (4).