Quickly tapping targets that are flashed during smooth pursuit reveals perceptual mislocalisations
Quickly tapping targets that are flashed during smooth pursuit reveals perceptual mislocalisations
复制标题
快速点击在顺利追踪过程中闪烁的目标会揭示感知错误定位
作者：
G. Rotman;E. Brenner;J. Smeets
在各种研究中，受试者在追踪眼球运动过程中会错误感知目标的位置。他们把它们误定位在追逐的方向上。然而，汉森（Hansen，1979）发现，受试者在追逐时用快速的锤击准确地击中了闪光的目标。我们研究了这是否是因为确定我们对目标位置的感知判断的信息与用于引导我们的手到达类似目标的信息之间存在根本差异。受试者被要求用食指快速敲击在追逐过程中闪现的目标。他们根据上述的感知错位，系统地在闪光的位置之前敲击。因此，在汉森的研究中缺乏系统误差并不是快速运动反应的一般特性。
In various studies subjects have been shown to misperceive the positions of targets that are flashed during pursuit eye movements. They mislocalise them in the direction of pursuit. Nevertheless, Hansen (1979) found that subjects accurately hit targets that are flashed during pursuit with a quick hammer blow. We examined whether this is because there is a fundamental difference between the information that determines our perceptual judgements of a target’s position and the information that is used to guide our hand to a similar target. Subjects were asked to quickly tap targets that were flashed during pursuit with their index finger. They systematically tapped ahead of the position of the flash, in accordance with the above-mentioned perceptual mislocalisations. Thus the lack of systematic errors in Hansen’s study is not a general property of fast motor responses.