Location probability learning requires focal attention
Location probability learning requires focal attention
复制标题
位置概率学习需要集中注意力
作者：
Kabata T;Yokoyama T;Noguchi Y;Kita S
目标识别与目标出现在给定位置的频率有关，频率越高，识别能力越高。这种现象表明，通过对目标的重复经验学习到的位置概率会调节认知处理。然而，尚不清楚是否需要对目标进行仔细处理来学习位置概率。在这里，我们使用双任务范例来测试有人参与和无人参与的刺激的位置概率效应。观察者执行了一项需要集中注意力的中心字母任务和一项操纵位置概率的外围条辨别任务。因此，我们能够比较当注意力完全集中在目标上时（单任务条件）与当注意力资源被中心任务吸引时（双任务条件）时外围任务的表现。位置概率效应仅发生在单任务条件下，此时注意力资源完全可用。这表明位置概率学习需要注意目标刺激。
Target identification is related to the frequency with which targets appear at a given location, with greater frequency enhancing identification. This phenomenon suggests that location probability learned through repeated experience with the target modulates cognitive processing. However, it remains unclear whether attentive processing of the target is required to learn location probability. Here, we used a dual-task paradigm to test the location probability effect of attended and unattended stimuli. Observers performed an attentionally demanding central-letter task and a peripheral-bar discrimination task in which location probability was manipulated. Thus, we were able to compare performance on the peripheral task when attention was fully engaged to the target (single-task condition) versus when attentional resources were drawn away by the central task (dual-task condition). The location probability effect occurred only in the single-task condition, when attention resources were fully available. This suggests that location probability learning requires attention to the target stimuli.