| Background:With the development of modern tennis,the cognitive decision-making ability of tennis players has higher requirements.Vision is a prerequisite for getting information and making decisions.Therefore,the visual search ability of tennis players determines the effect of subsequent decisions and has an important influence on the sports table in the game.At present,most stimulus materials in visual search studies are mainly videos or pictures,which lack a certain ecological validity.Visual search studies that combine video and pictures are rare.Objective: In this study,videos and pictures were combined to produce stimulus materials,and the serving link in tennis was selected as the movement scene.The eye-movement recording technology was adopted to record the behavioral indicators and eye movement indicators of college tennis majors in video and picture situations,and to explore the visual search characteristics of college tennis majors with different sports experiences in the receiving situation.Methods: This study mainly uses experimental method and adopts the expert-novice paradigm,which is divided into two factors: exercise experience(experience group,novice group)× stimulus material(dynamic video,static picture).Thirty subjects volunteered to participate in the experiment and were divided into two groups according to the years of professional tennis training: the experience group and the novice group,15 in each group.The experiment took the tennis service receiving task as the sports scene,combined with video and pictures to stimulate the two materials.The subjects need to predict the direction of the serve in the stimulation process,and make corresponding key response,then the computer records the visual search characteristics in the stimulation process,analyzes the experience group and the novice group under different stimulus materials of the predicted response time,predicted accuracy and first fixation time,fixation times,pupil diameter and fixation time,explore the visual search characteristics of college tennis.Results:1.Behavioral indexes: 1)During the experiment of the experience group,the predicted response time and predicted accuracy of the video material were significantly higher than those of the picture material(P<0.01).2)During the experiment of the novice group,the predicted reaction time of the video material was significantly higher than that of the picture material.3)The prediction accuracy of the experienced group was significantly higher than that of the novice group(P<0.01).4)Under the picture material,the novice group had a significantly higher predictive response than the experienced group(P<0.01).2.Eye movement indexes: 1)During the experiment,the first fixation time and fixation times of the video materials were significantly higher than those of the picture materials(P<0.01),and the pupil diameter and fixation time of the experience group were significantly lower than those of the picture materials(P<0.01).2)In the novice group,the first fixation time and fixation times of video materials were significantly higher than those of picture materials(P<0.05,P<0.01);The fixation time was significantly lower than that of the picture material(P<0.01).3)Under the video material,the first fixation time and fixation time of the experience group were significantly higher than those of the novice group(P<0.05,P<0.01),and the fixation times of the experience group were significantly lower than those of the novice group(P<0.01).4)The first fixation time,pupil diameter and fixation time of the experience group were significantly higher than those of the novice group(P<0.01),and the fixation times of the experience group were significantly lower than those of the novice group(P<0.01).Conclusion:1.In the video situation and the picture situation,there were significant differences between the experienced group and the novice group in the predicted reaction time and predicted accuracy.The tennis players in the experienced group had more sensitive reaction speed and higher prediction accuracy.Novice group reaction speed is slow,prediction accuracy is low.2.Video and picture materials have an effect on the eye movement characteristics of college tennis players,and each index changes with the change of different stimulus materials.It shows that the tennis players in the experience group have deeper cognition of information,better information search efficiency and more perfect search mode.Novice group information search efficiency is low,requires more gaze times,consumes more gaze time.3.Both the experienced group and the novice group had a higher degree of attention to the hitting moment in the whole service action,among which the racket and arm were the longest.The difference was that the experienced group increased the gaze on the torso,while the novice group was more likely to be interfered by irrelevant factors. |
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