De Lucia P R, Cochran E L
Percept Mot Skills. 1985 Aug;61(1):143-50. doi: 10.2466/pms.1985.61.1.143.
Studies of batters' eye movements have demonstrated that batters do not (or cannot) maintain fixation on the ball throughout its trajectory. In addition, the velocity of a pitched ball, together with the limitations of human reaction time, seems to imply that only the first portions of the ball's trajectory provide information to batters. We prevented nine experienced fast pitch softball players from viewing the ball during the first, middle, or last third of its trajectory and found that seeing the first third of the ball's trajectory is not as critical as had been thought: batters are very good at making do with whichever two-thirds of the ball's trajectory is visible. The results demonstrate the importance of peripheral vision and indicate that batters can extract perceptual information for batting throughout the flight of the ball.
对击球手眼球运动的研究表明，击球手在球的整个轨迹过程中不会（或无法）一直注视着球。此外，投出球的速度，再加上人类反应时间的限制，似乎意味着只有球轨迹的前半部分能为击球手提供信息。我们让九名经验丰富的快投垒球运动员分别在球轨迹的前三分之一、中间三分之一或后三分之一的过程中看不到球，结果发现，看到球轨迹的前三分之一并不像人们认为的那么关键：击球手非常擅长利用球轨迹可见的任意三分之二来击球。这些结果证明了周边视觉的重要性，并表明击球手在球的整个飞行过程中都能提取用于击球的感知信息。
