Saccade target selection and object recognition: Evidence for a common attentional mechanism
Saccade target selection and object recognition: Evidence for a common attentional mechanism
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DOI：
10.1016/0042-6989(95)00294-4
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发表时间：
1996-06-01
期刊：
影响因子：
1.8
通讯作者：
Schneider, WX
中科院分区：
文献类型：
--
作者：
Deubel, H;Schneider, WX
在双重任务范式下，研究了视觉注意和眼跳运动的空间交互作用，该范式要求目标定向的眼跳和字母辨别任务相结合，受试者必须跳到中央注视十字的左右两侧水平字母串内的位置。实验结果表明，当辨别刺激和眼跳目标指的是同一物体时，视觉辨别能力最强；相邻项目的辨别能力接近机率水平。此外，尽管事先知道歧视目标位置，但不可能在跳跃到空间上接近的扫视目标时将注意力引导到歧视目标。这些数据有力地证明了眼跳编程和视觉注意对一个共同目标对象的强制性和选择性耦合，结果支持一个模型，在该模型中，单一的注意机制选择对象进行感知处理和识别，并提供运动动作所需的信息。版权所有(C)1996爱思唯尔科学有限公司。
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 reverse E'', presented tachistoscopically before the saccade within the surrounding distracters 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. Copyright (C) 1996 Elsevier Science Ltd.