Human Electroencephalogram-Controlled Effects of Photostimulation

Abstract

The assumption that rhythmic light stimulation may exhibit high biological efficiency when automatically modulated by a human electroencephalogram has been tested experimentally. A comparative analysis of the effects observed in the same subjects in response to the two types of rhythmic photostimulation has been performed. In one case, 15 volunteers who were in a state of stress and anxiety, were exposed to real-time light rhythmic stimulation based on their electroencephalograms, and in the other case (control), rhythmic photostimulation was applied at a frequency that increased linearly from 4 to 25 Hz. It has been demonstrated that significant positive shifts in the objective and subjective indicators are found only in cases when the control of light stimulation is performed directly via the subject’s electroencephalogram. These results may be explained by an increased personalization of electroencephalogram-derived stimulation, as well as by the the interaction between the interoceptive signals with the resonance mechanisms of the brain, which provide the normalization of the human functional state under electroencephalogram-derived rhythmic light stimulation.