Carkeet A, Brown B, Chan P
Centre for Eye Research, School of Optometry, QUT, Red Hill, Australia.
Ophthalmic Physiol Opt. 1996 Mar;16(2):158-62.
When competition pistol shooters aim, they perform four basic visual alignment tasks. With optimal stimuli such tasks can be performed with exquisite sensitivity. However, pistol sights and the target may not constitute the optimal stimuli, and this may impose limits on how well shooters perform. By simulating pistol sights and targets on a computer monitor, we investigated how the vernier task of aligning the top edges of the front and rear pistol sights was affected by the proximity of the target aiming mark. Alignment random error in this task, an analogous measure to vernier acuity, was unaffected by the proximity of the aiming mark; however, alignment systematic error did change significantly as the proximity of the aiming mark changed. This effect was unlikely to significantly change pistol shooting performance as shooters can adjust their sights to compensate for systematic errors. Likewise, compared to the vertical spread of shots on the pistol target, alignment random error was extremely small (only 10 s arc), which implies that other sources of variation limit pistol shooting performance.
当竞技手枪射击者瞄准目标时，他们要完成四项基本的视觉对准任务。在最佳刺激条件下，这些任务能够以极高的灵敏度完成。然而，手枪准星和目标可能并非最佳刺激，这可能会对手枪射击者的表现产生限制。通过在电脑显示器上模拟手枪准星和目标，我们研究了将手枪前后准星上边缘对齐的游标任务是如何受到目标瞄准标记距离的影响。该任务中的对准随机误差（类似于游标视力的一项指标）不受瞄准标记距离的影响；但是，对准系统误差确实会随着瞄准标记距离的变化而显著改变。由于射击者可以调整准星以补偿系统误差，这种影响不太可能显著改变手枪射击表现。同样，与手枪靶上弹着点的垂直散布相比，对准随机误差极小（仅10秒弧度），这意味着其他变异来源限制了手枪射击表现。
