We hypothesized that in healthy individuals the low-intensity stimulation with fractal optical stimuli, whose structure are close to the activity of a healthy brain may be helpful method of brain training and promote favorable psychophysiological changes through the mechanism of brainwave entrainment. The purpose of this study was to evaluate the effect of short-term training of the brain using fractal optical stimulation on the performance of table tennis athletes. 12 students with a basic level of training in table tennis were tested before and after a 10-minute break. In the main group, in the time of break, the training was performed using ten minutes fractal photo-stimulation. The fractal dimension of the complex-structured signal specified by the computer program was 1.4. Fractal structure of stimuli has been created based on Weier strass functions. Psychophysiological tests included assessment of a simple visual motor reaction, contact tremorometry, investigation of the critical flicker frequency, pulsometry, and motor tests with targets.As a result of this pilot study, we first presented the evidence of the positive influence of low-intensity stimulation with fractal optical stimuli on psychophysiological parameters characterizing the physical and mental performance of the table tennis athletes. The short-term training of the brain by fractal photo-stimulation improves the psychophysiological parameters characterizing the physical and cognitive performance of table tennis players.
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