O aumento da inibição do estímulo luminoso em indivíduos com cybersikness

Abstract

In response to the virtual environment, we can observe discomforts such as nausea, difficulty concentrating, headache, among others. These discomforts are generated through Cybersickness, which is the result of the vestibular-visual conflict, that is, of the incoherence between sensations related to real movement in the virtual environment and to visual stimuli. There are no studies in the literature that analyze the control of inhibition of the luminous stimulus of individuals sensitive to Cybersikness. Therefore, this study controls the inhibition of the luminous stimulus in Cybersickness. The Sickness Susceptibility Questionnaire was used to divide individuals into experimental and control groups, and to quantify the signs and symptoms, comparing them before and after 3D virtual immersion. Participants from both groups were examined with EEG for absolute power of the theta band in the dorsolateral prefrontal cortex and ventrolateral prefrontal cortex during the task of inhibiting the luminous stimulus, after participants watched the video 3D. The results showed that there was an increase in the absolute power of the theta band in both groups comparing the before and after moments, as well as there was a significant difference of the experimental group compared to the control for the pre-frontal and ventrolateral prefrontal cortex. Therefore, it can be considered that the increase of the absolute power of theta in the prefrontal and ventrolateral cortex is not related only to the appearance and / or intensification of the symptoms, but also to the greater control during the task of inhibition of the luminous stimulus.