The Reference Frame of IOR Depends on How You Measure it
The Reference Frame of IOR Depends on How You Measure it
复制标题
DOI：
10.1068/ic324
复制
发表时间：
2011-05-01
期刊：
影响因子：
1.9
通讯作者：
Hunt AR
中科院分区：
文献类型：
--
作者：
Krueger HM;Jensen S;Hunt AR
注意力偏向于返回最近检查过的位置，这种效应被称为返回抑制（IOR）。为了便于视觉搜索，IOR应该以空间坐标而不是视网膜坐标编码。在这里，我们报告了两项研究表明，返回抑制的参考框架是灵活的，由任务需求。当参与者进行手动目标检测任务与干预之间的线索偏移和目标发病眼跳，我们发现retinotopic IOR。提示出现在屏幕上的四个标记中的一个;这意味着目标更可能出现在提示的空间位置而不是视网膜位置。在第二个实验中，我们颠倒了这个模式，这样目标就不太可能出现在线索的视网膜位置。现在，目标检测在视网膜位置相对容易，而在空间位置的线索相对抑制。然而，本实验中的空间定位IOR不如先前实验中的视网膜定位IOR稳健。这些研究结果表明，降低目标与视网膜或空间坐标中的线索对齐的概率会增加该参考系中的IOR，尽管IOR在传统的线索-目标范例中比空间坐标更稳健。
Attention is biased from returning to recently-inspected locations, an effect known as Inhibition of Return (IOR). For IOR to facilitate visual search, it should be coded in spatial, not retinal, coordinates. Here we report two studies indicating that the reference frame of IOR is flexible and determined by task demands. When participants performed a manual target detection task with an intervening saccade between cue-offset and target-onset, we found retinotopic IOR. The cue occurred in one of four markers on the screen; this meant the target was more likely to occur in the spatiotopic location of the cue than in its retinotopic location. In a second experiment we inverted this pattern so that the target was less likely to occur in the retinotopic location of the cue. Now target detection was relatively facilitated in the retinotopic location and relatively inhibited in the spatiotopic location of the cue. However, spatiotopic IOR in this experiment was not as robust as retinotopic IOR in the previous experiment. These findings show that decreasing the probability of targets aligning with cues in retinotopic or spatiotopic coordinates increases IOR in that frame of reference, although IOR is more robustly retinotopic than spatiotopic in a traditional cue-target paradigm.