Hoffman J E, Subramaniam B
Department of Psychology, University of Delaware, Newark 19716, USA.
Percept Psychophys. 1995 Aug;57(6):787-95. doi: 10.3758/bf03206794.
The relationship between saccadic eye movements and covert orienting or visual spatial attention was investigated in two experiments. In the first experiment, subjects were required to make a saccade to a specified location while also detecting a visual target presented just prior to the eye movement. Detection accuracy was highest when the location of the target coincided with the location of the saccade, suggesting that subjects use spatial attention in the programming and/or execution of saccadic eye movements. In the second experiment, subjects were explicitly directed to attend to a particular location and to make a saccade to the same location or to a different one. Superior target detection occurred at the saccade location regardless of attention instructions. This finding shows that subjects cannot move their eyes to one location and attend to a different one. The result of these experiments suggest that visuospatial attention is an important mechanism in generating voluntary saccadic eye movements.
在两个实验中研究了扫视眼动与隐蔽定向或视觉空间注意之间的关系。在第一个实验中，要求受试者向指定位置进行扫视，同时还要检测在眼动之前呈现的视觉目标。当目标位置与扫视位置重合时，检测准确率最高，这表明受试者在扫视眼动的编程和/或执行过程中使用了空间注意。在第二个实验中，明确指示受试者注意特定位置，并向同一位置或不同位置进行扫视。无论注意指令如何，在扫视位置都出现了更好的目标检测。这一发现表明，受试者不能将眼睛移到一个位置而注意另一个位置。这些实验的结果表明，视觉空间注意是产生自主扫视眼动的重要机制。
