Nonretinotopic exogenous attention.

Nonretinotopic exogenous attention.
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DOI:
10.1016/j.cub.2011.08.059
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发表时间:
2011-10-25
期刊:
影响因子:
9.2
通讯作者:
Herzog, Michael H.
Herzog, Michael H.
中科院分区:
生物学1区
文献类型:
--
作者:
Boi, Marco;Vergeer, Mark;Ogmen, Haluk;Herzog, Michael H.

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注意力对于视觉感知是至关重要的,因为它允许视觉系统通过从撞击在眼睛上的大量信息中选择行为和认知相关的刺激来有效地利用其有限的资源。反射性的、刺激驱动的注意力对于与环境的成功互动至关重要,因为它可以加速对危及生命的事件的反应。一般认为,外源性注意在早期视觉系统的视网膜坐标中起作用。在这里,使用一种新的实验范式,我们表明,非retinotopic线索提高视觉搜索任务的准确性和反应时间。此外,线索的影响在空间和时间上都是有限的,这是外源性线索的典型特征。这些和其他最近的发现表明,视觉的更多方面是非视网膜加工的,而不是以前认为的。
Attention is crucial for visual perception because it allows the visual system to effectively use its limited resources by selecting behaviourally and cognitively relevant stimuli from the large amount of information impinging on the eyes. Reflexive, stimulus-driven attention is essential for successful interactions with the environment because it can, for example, speed up responses to life threatening events. It is commonly believed that exogenous attention operates in the retinotopic coordinates of the early visual system. Here, using a novel experimental paradigm, we show that a non-retinotopic cue improves both accuracy and reaction times in a visual search task. Furthermore, the influence of the cue is limited both in space and time, a characteristic typical of exogenous cueing. These and other recent findings show that many more aspects of vision are processed non-retinotopically than previously thought.
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