Characteristics of players.

Purpose
This study aimed to evaluate the difference between binocular and monocular vision and eye movements during the competition using video-oculography (VOG).
Methods
Experiment 1 included 14 participants to evaluate differences in arrow convergence. Then, seven participants in Experiment 1 were randomly selected and included in Experiment 2, which evaluated eye movements during archery using VOG. The target used an 80-cm waterproof target face and was set at a distance of 30 m. All players shot the target 36 times using their bows and arrows. Experiments 1 and 2 evaluated the distribution of arrows in each score and the number of focus points, respectively, between binocular and monocular conditions.
Results
The arrows, which include the area of 9 points, were significantly greater in the binocular condition (11.85 ± 5.04 shots) than in the monocular condition (9.36 ± 5.41 shots) in Experiment 1 (P = 0.047). The players focused on the target under both binocular and monocular conditions, although the players were switching off fixation between the target and shooting sight under the binocular condition in Experiment 2.
Conclusion
These behaviors indicated that the players were trying to accurately shoot the target by exploring the distance between themselves and the target as a cue for depth perception.

## 研究目的
本研究旨在通过眼动视频描记法（video-oculography, VOG），评估竞技过程中双眼视觉与单眼视觉的差异及伴随的眼动特征。

## 研究方法
实验1招募14名参与者，用于评估箭矢落点的汇聚差异。随后从实验1的参与者中随机选取7名，纳入实验2，以VOG评估射箭过程中的眼动特征。实验所用靶具为80cm防水靶面，设置距离为30米。所有参与者均使用弓箭向靶具射击36次。实验1与实验2分别评估双眼、单眼视觉条件下，箭矢的各得分环分布情况与注视点数量。

## 研究结果
实验1中，双眼视觉条件下命中9环区域的箭矢数量（11.85±5.04次）显著多于单眼视觉条件（9.36±5.41次），差异具有统计学意义（P=0.047）。实验2中，尽管双眼视觉条件下参与者会在靶面与瞄准具之间切换注视，但双眼与单眼视觉条件下参与者均会聚焦于靶面。

## 研究结论
上述行为特征表明，参与者会通过探索自身与靶面之间的距离作为深度知觉线索，以实现精准射击。