Deubel H, Schneider W X
Max-Planck-Institut für psychologische Forschung, München, Germany.
Vision Res. 1996 Jun;36(12):1827-37. doi: 10.1016/0042-6989(95)00294-4.
The spatial interaction of visual attention and saccadic eye movements was investigated in a dual-task paradigm that required a target-directed saccade in combination with a letter discrimination task. Subjects had to saccade to locations within horizontal letter strings left and right of a central fixation cross. The performance in discriminating between the symbols "E" and "E", presented tachistoscopically before the saccade within the surrounding distractors was taken as a measure of visual attention. The data show that visual discrimination is best when discrimination stimulus and saccade target refer to the same object; discrimination at neighboring items is close to chance level. Also, it is not possible, in spite of prior knowledge of discrimination target position, to direct attention to the discrimination target while saccading to a spatially close saccade target. The data strongly argue for an obligatory and selective coupling of saccade programming and visual attention to one common target object. The results favor a model in which a single attentional mechanism selects objects for perceptual processing and recognition, and also provides the information necessary for motor action.
在一项双任务范式中研究了视觉注意力与眼跳运动的空间相互作用，该范式要求结合字母辨别任务进行目标导向的眼跳。受试者必须向中央注视十字左右的水平字母串中的位置进行眼跳。在眼跳之前以速示方式呈现于周围干扰物中的“E”和“E”符号之间的辨别表现被用作视觉注意力的指标。数据表明，当辨别刺激和眼跳目标指向同一物体时，视觉辨别效果最佳；对相邻项目的辨别接近随机水平。此外，尽管事先知道辨别目标的位置，但在向空间上接近的眼跳目标进行眼跳时，仍不可能将注意力指向辨别目标。数据有力地支持了眼跳编程与视觉注意力必须且选择性地耦合到一个共同目标物体的观点。结果支持这样一种模型，即单一的注意力机制选择物体进行感知处理和识别，并提供运动动作所需的信息。
