The Characteristics Of Movement Correction And Sequence Effect In Fencers

Fencers have to respond quickly to their opponents’ fast actions, so the capacityto correct their movements on-line is central to their ability. And their skill sequenceis very important which can modify the performance. To investigate thecharacteristics of movement correction and sequence effect in elite fencer whencompared to control group, two study were applied.The first study was designed to investigate the fencers’ expertise in movementcorrection. Behavioral data and event-related potentials（ERPs） were recorded infence experts（n=10） and novices（n=10） while they completed a manual aimingtask. The task was to manually move a cursor to the target point in a screen.Participants completed aiming movements in three experimental conditions（control，movement correction and correction failed）. Compared with control group，fencerscompleted the movement correction task with significantly less time（P <0.05） andhigher accuracy（P <0.05）. At the initial stage，the P1，N1and P2component wereevoked. The N2and P3component were evoked when participants corrected theirmovement. The peak amplitudes of P1（P <0.001），P2（P <0.05），N2（P <0.05）and P3（P <0.05） of fencers were lower than that of controls，and the peakamplitudes of N1was higher in fencers（P <0.05）. The latency of P2in fencers waslonger（P <0.05）．And there was no significant difference between the two groups’latency of other components. Fence experts correct their movement faster and moreaccurately with high efficiency advantages in cognitive processing.In the second study, we investigate the sequence effect of fencers in a Go/NoGotask. Behavioral data and event-related potentials（ERPs） were recorded in19fenceexperts and18novices while they completed a serial Go/NoGo task. Compared withcontrol group，fencers completed the Go task with significantly less time（P <0.001）and NoGo task with significantly higher accuracy (p <0.05). the fencer also showed asmaller sequence effect in both RT in Go trails and accuracy in NoGo trails. It isconcluded that the fencer has a more stable inhibition ability.