Human emotions significantly influence cognitive task performance, affecting processes such as attention, coordination, planning, and execution. In recent years, simulations based on virtual reality (VR) have been increasingly used to elicit specific emotional states, particularly in domains such as meditation, training, exposure therapy, and anxiety management. This article explores how the interactive and sensory components of VR-based simulations can effectively provoke emotional responses. A case study is presented in which a simulation based on virtual reality is used to evaluate the impact of users' emotional states on their performance in a cognitive task. Results from a pilot experiment suggest a meaningful relationship between the emotions elicited and task execution effectiveness, underscoring the potential of VR-based simulations as valuable tools for investigating the interplay between emotion and cognition.