Study On The Effect Of Time Perception In Different Sports Level Under The Memory Load By ERP

using the memory load and time of dual task paradigm(memory tasks × time task), trying to explore the memory load how to influence the different level athletes time perception. With the help of ERP,try to explore the influence of time perception mechanism.The first study: Methods: based on the 21 high level athletes, 15 professional sports college students and 18 normal college students as the subjects.With the help of E- prime2.0 software version of the psychological experiment,using time produce method to test 2.5 s perception.Results:(1) in the absence of memory load time task, high level athletes and sports professional college students' time estimates close to standard pitch, ordinary college students produce time is significantly higher than standard distance;(2)Sports Majors and ordinary undergraduates time estimate in memory load estimation was significantly shorter than the time perception in no memory load estimation,the difference was significant(P <0.05), while high-level athletes is not affected by memory load;(3)high-level athletes average error of estimated time is significantly less than the sports majors and ordinary undergraduates groups.Conclusion: The high-level athletes time perception accuracy is the best and stability and anti-interference memory load ability is better than sports majors and ordinary undergraduates;Prove that exercise can help the brain development, the advantage of the sense of time including the time perception accuracy, stability and anti-jamming capability.The second study using ERPs equipment try to explore the influence of time perception mechanism. The experiment uses 3 ? 2 mixed design. Choose eight masters level aerobics athlete and 10 secondary aerobics athletes as the research object. Asked objects to reproduce 2.5 s interval, and with the aid of memory material selection is difficult to code graphics, including two graphics memory materials and four graphics memory materials. The results showed that:(1) with and without memory under load time copying tasks, athlete group participants accuracy and stability of time judgement were better than the second group.(2) the memory load has significantly effect on P300 latency of athlete group FP1, FP2, Fz the(P < 0.05);has significantly effect on the incubation period of P300 of the second group Fz,Pz,CPz(P < 0.05).(3) the memory load has significantly effect on P300 peak amplitude of secondary group Fz, FCz(P < 0.05).(4) under the two graphics memory load disturbance, the CNV induced in the secondary group in FP1, Fz, FCz was significantly greater than athlete group(P < 0.05).(5) under the four graphics memory load, the athlete group and secondary group differences in mainly activated brain regions, athlete group mainly activated FP1, FP2, FPz; Secondary group mainly activated the Cz, CPz, Pz, FCz.(6) the memory load has significant effects on the secondary group CNV1, CNV2, CNV3, CNV4, CNV5, P < 0.01; Memory to load has significant effect on athlete group CNV1, CNV4, CNV5,while has no significant effect on CNV2. Conclusion:(1) in the absence of memory under load disturbance,athlete time perception were significantly better than the secondary group.(2) During the memory load disturbance, the athlete group and secondary group can lead to shorter time of the perceived, athlete group less affected by the memory load.(3) to influence the P300 latency, memory load of athlete group left frontal lobe, right frontal lobe, the frontal and prefrontal cortex is influenced by the memory load significantly; Secondary group at the top of the frontal lobe, area, to the top of the central area of P300 latency period significantly influenced by the memory load.(4)the memory load to the secondary group of frontal lobe, the frontal central P300 peak amplitude effect significantly, the memory load, the greater the peak amplitude is smaller, but the athlete group had no significant effect.(5) under the memory load disturbance, the athlete group processing of time the task is more cost-effective.(6)under the memory task more difficult, athlete group and secondary group main areas of the brain to trigger the differences, the athlete group mainly induced by the left frontal lobe, right frontal and prefrontal cortex; Secondary group mainly induced by the central region, the central area, frontal, top in central area.(7) the memory load influence of the secondary group time task is complete, but affects athlete group only part.