The Neural Efficiency Of Table Tennis Players In Different Spatial Task Cognitive Processing Based On Evoked Eeg Signals

Neural efficiency is the use efficiency of cortical neural resources in individuals cognitive processing process for to obtain task performance.Spatial task cognitive processing refers to the cognitive process in which individuals perceive,encode,remember,store and extract the spatial information of visual objects.Spatial task processing is an important process in sports field,which directly affects athletes' task performance.After long-term sport training,athletes can show not only high level processing ability of spatial task information,but also the high cerebral cortex function and the high efficiency of neural resource utilization.The neural efficiency of spatial cognitive processing cortex is of great significance for revealing the neural efficiency of spatial processing cortex of athletes,and reveal the mechanism of brain neural efficiency,and explain athletes high level sports cognitive ability and improving the quality of athletes training.However,which may be affected by regulatory factors such as specific experience,task type,cognitive style and brain area loop.The activation trend of athletes' cerebral cortex is not consistent with the neural efficiency hypothesis.Therefore,based on neural efficiency hypothesis and the model of synchronization and coherence model,this study choose brain nerve function model of table tennis athletes,through the different spatial tasks of cognitive processing,analyzing evoked electroencephalogram(EEG)signals,exploring table tennis players athletes cortical activation change trend of the cognitive and neuronal functional coupling,as well as table tennis players neural efficiency characteristics in the In spatial tasks cognitive processing.The following experiments results:(1)In the cognitive processing process of special action tasks,the accuracy rate of movement recognition in the athletes was higher than,indicating that the accuracy of athletes in the processing of spatial tasks related to was higher.Frequency domain analysis showed that the low frequency alpha rhythm event related desynchronization/synchronize(ERD/S)of occipital and parietal region of athletes was lower than that of control group,the high-frequency alpha ERD of occipital parietal region and mirror system was lower than the control group,the theta and high-frequency alpha ERD of athletes in right occipital-temporal and occipital-frontal region were higher than the control group.On the other hand,the low frequency alpha and high frequency alpha rhythm coherence coefficients in athletes' right frontal-temporal cortex were higher than the control group,and highfrequency alpha coherence coefficients in occipital-parietal cortex and occipitalfrontal cortex were lower than that of the novice group,and high-frequency alpha coherence coefficients in frontal-temporal region were lower than that of the control group,high-frequency alpha coherence coefficients in frontal-parietal region,bilateral frontal,parietal,temporal regions were lower than that of the control group.(2)In spatial and rotation characteristic tasks cognitive processing,there was significant difference in the accuracy between athletes and control group.In the spatial position and rotation characteristic task,theta ERS of athletes' left frontal and temporal region was lower than that of the control group,high-frequency alpha ERD in left parietal,left frontal,left temporal,parietal and occipital area were lower than those of the control group,and alpha coherence coefficient of the athletes' right temporal-frontal,right frontal-occipital region were higher than those of the normal group,alpha coherence coefficients in left temporal-frontal region,bilateral temporal,parietal,frontal region were lower than those of the control group.(3)In the processing of spatial tasks,the response accuracy rate of athletes was higher than that of the control group,and frequency domain analysis showed,the high frequency alpha ERD in athletes' parietal and central area of were lower than those of the control group,indicating these regions induced cortical activation was lower.On the other hand,alpha coherence coefficients in right temporal-frontal,frontal-occipital area were higher than those of the control group,but alpha coherence coefficient in left temporalfrontal area,and bilateral parietal area was lower than these of the control group,which also reflect the function of these brain interval coupling athletes,also showed a trend of differentiation and focus.(4)The comparison of event-related brain potentials of position and rotation space tasks processing showed that the peak amplitude of evoked N1 composition in athletes' parietal,occipital area,as well as the evoked N2 composition in frontal,central area were higher than control group,but peak amplitude and latency of P300 in athletes frontal,central,parietal area were lower than the control group.In the spatial position processing task,the average amplitude of evoked N1 in athletes' frontal area,central and parietal area was higher than that of the control group,and peak amplitude of N2 in athletes' frontal and parietal were higher than those of the control group,but peak amplitude and latency of P300 in athletes parietal area was lower than that of the control group,which indicated that athletes consumed more early resources and reduced the resources in later processing.(5)In the space position task processing,the comparison between time-frequency energy spectrum and ERPs shows that ERPs show high correlation with the ERD/S of theta and alpha rhythm,and indicating that amplitude and latency of event related potential N1,N2,P300 reflects the change trend of different stages of processing of brain energy consumption.Based on research results,we got the following conclusions:(1)In the cognitive processing of special action and motion-related spatial tasks,the activation of the athletes' frontal,parietal,temporal,occipital cortex,and rhythmic functional coupling in the frontal-occipital,frontal-temporal and frontal-parietal areas of the brain demonstrated the high efficiency of the use of brain nerve resources.(2)In the motionrelated spatial tasks processing,table tennis players consume more neural resources at early stage and less that of the late processing stage,and indicates that neural efficiency is characterized by late processing.(3)The commonalities and differences of the athletes areas neural activation and functional coupling trends in the different spatial task,suggests the neural efficiency of table tennis players is show not only the migration effect,but also the influence of sports experience.(4)The neural efficiency model of in spatial tasks processing can reveal the temporal and spatial characteristics of the neural efficiency of spatial task processing in table tennis players.