A Study On Super EEG Analysis Towards Elite Swimmers' Mental State Prior To Competition

In competition, athletes'mental state was the only existence of mental activity. Among all kinds of mental states, mental state prior to competition was the most important. Therefore, it was of great applied value to seek an appropriate method to reflect athletes'mental state prior to competition.At present, there were some limits for those common used methods, such as some simple physiological index and scales. Super Encephalofluctuograph Technology (SET) was a newly developed technology in China, which had more merits than those brain imaging technologies used before. It was harmless and could reflect several neurotransmitters'activity by scanning brain electronic activity directly and effectively. Also it had been widely applied into medicine, spaceflight and education.Based on those causes, SET was adopted as the main method of this study. 20 elite swimmers'participated in the experiment. Athlete's EEG was collected at 3 moments: one week before competition, one day before competition and within 24 hours after competition by Encephalofluctuograph Technology. Besides, Precompetition Mental State Questionnaire, A list of Physiological State and Coach Evaluation Scale were adopted as a basis to divide all into two groups: better mental state group and worse mental state group. Two groups'SET data were compared in non-parametric test. Main conclusions were as follows:1) There was a special change in elite swimmers'centre neurotransmitters one day before the competition instead of a week before, which was characterized by spatial structure of the brain.2) One day before the competition, the change in centre neurotransmitters were relevant to a certain cortex, which could be summarized by left-domain predominance of DA, anterior-domain pattern of Ach and right brain-domain of 5-HT.3) Good mental state demanded reasonable temporal structure and left-right coordination. These patterns of three neurotransmitters and frontal-domain pattern could be a scientific standard to diagnose mental state before competition.