Saccade target selection during visual search
Saccade target selection during visual search
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DOI：
10.1016/s0042-6989(96)00218-0
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发表时间：
1997-03-01
期刊：
影响因子：
1.8
通讯作者：
Findlay, JM
中科院分区：
文献类型：
--
作者：
Findlay, JM
据报道，在五个实验中，受试者在执行视觉搜索任务时记录了眼球运动，目的是调查是否可以编程精确的初始目标定向扫视。在实验1-2中，受试者将他们的眼睛移到由颜色定义的目标上，这些目标被呈现在圆形阵列中的七个非目标上。短潜伏期的准确眼跳是常见的，但有时也会发生错误，搜索专门由一组同类分心物体的颜色差异定义的“奇怪”目标特别容易出错，在实验3中，偶尔的实验包含两个目标。第一次扫视有时落在目标之间的中间位置。在实验4和实验5中，目标被呈现在两个8同心圆环中的15个分心物体上。由形状指定的目标可以通过一次扫视精确定位，寻找颜色-形状联结的难度较大，但内环的目标经常通过一次扫视定位。结果表明，在简单搜索和联合搜索中，初始眼动的控制都是通过一个空间平行的过程进行的。(C)1997年爱思唯尔科学有限公司。
Five experiments are reported in which eye movements were recorded while subjects carried out a visual search task, The aim was to investigate whether an accurate initial target directed saccade could be programmed. In Experiments 1-2, subjects moved their eyes to targets defined by colour, which were presented with seven non-targets in a circular array. Accurate saccades with short latencies were common but errors sometimes occurred and search for an ''oddity'' target, defined exclusively by difference in colour from a homogeneous set of distracters, was particularly error prone, In Experiment 3, occasional trials contained double targets. First saccades sometimes landed at an intermediate position between the targets. In Experiments 4 and 5, targets were presented with 15 distracters in two concentric rings of 8. Targets specified by shape could be located accurately with a single saccade, Search for a colour-shape conjunction was more difficult but targets in the inner ring were located frequently with a single saccade, The results suggest that the control of the initial eye movement during both simple and conjunction searches is through a spatially parallel process. (C) 1997 Elsevier Science Ltd.