PURPOSE: Peculiarities of amplitude-time characteristics of cortical reactions in Greco-Roman wrestlers with different individual-typological properties of the nervous system. METHODS: The 27 elite Greco-Roman right-handed wrestlers, aged 18-27, took part in the research. During the competitive activity, a video recording and analysis of the technical and tactical actions (TTA) were carried out. In the research the EEG-testing methods were used and the amplitude-time characteristics of the wrestlers` brain activity were determined, related to the implementation of the motor reactions in the Go-No Go-Go task paradigm. Cognitive evoked potentials were analyzed in frontal, central and parietal cortex. We determined the latency periods of N2 and P3 components and amplitudes of N2 and P3 waves. Also, we studied individual-typological properties of the nervous system - functional mobility of nervous processes (FMNP). The mathematical statistics were used. RESULTS: We established a pronounced dependence of TTA indicators and the effectiveness of competitive activity of wrestlers on genetically determined individual characteristics of the wrestlers` FMNP. Wrestlers, who had a higher level of FMNP of the nervous system, were characterized by higher expert evaluations of fighting efficiency and TTA of fighting. Performance of the motor task in the Go-No Go-Go paradigm was accompanied by the predominance of the latent component N2 in the areas of the parietal cortex mainly in the right hemisphere and the amplitude of the component P3 in the frontal region of the left hemisphere. In wrestlers with a high level of FMNP, a statistically significant higher response of the cortex, according to the latent component P3 and the interpeak amplitude of the P2N2 interval were found, than in wrestlers with a low level of the examined typological property of the nervous system. A local potential shift in the interval of N2P3 peaks was registered in the right central and parietal regions with greater amplitude in the left hemisphere, which indicated a higher power of the inhibitory process of wrestlers with a high level of FMNP. CONCLUSION: Amplitude-time characteristics of brain activity in elite Greco-Roman wrestlers with a high level of FMNP were characterized by higher expert evaluations of the effectiveness of the fight and TTA of conducting the match, than individuals with a low gradation of the studied typological property. EEG characteristics of induced brain activity under the condition of cognitive information processing in the Go-No Go-Go paradigm of elite wrestlers with a high level of FMNP revealed statistically significant higher power and speed of the braking process, than in wrestlers with a low level of the studied typological property. Amplitude-time EEG characteristics of brain activity and individual-typological properties of the nervous system, together with technical and tactical preparation, can be recommended as criteria for evaluating the prospects of wrestlers.
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