Sustained division of the attentional spotlight
Sustained division of the attentional spotlight
复制标题
DOI：
10.1038/nature01812
复制
发表时间：
2003-07-17
期刊：
影响因子：
64.8
通讯作者：
Hillyard, SA
中科院分区：
文献类型：
--
作者：
Müller, MM;Malinowski, P;Hillyard, SA
通过主动将注意力引导到视觉场景的特定区域，我们可以改善对该位置刺激的感知（1）。这种将注意力集中在视野特定区域的能力被比喻为一个可移动的聚光灯或变焦透镜，有助于处理其“光束”内的刺激（2，3）。一个长期存在的争议集中在空间注意力的聚光灯是否有一个单一的光束，或者它是否可以灵活地分为不同的位置（2，4 -6）。支持单一聚光灯观点的证据来自大量的行为（3，7 -10）和电生理（11，12）研究。然而，最近的实验表明，对于非常短暂的刺激暴露，空间注意力的焦点可能被划分在视野的非连续区域之间（
By voluntarily directing attention to a specific region of a visual scene, we can improve our perception of stimuli at that location(1). This ability to focus attention upon specific zones of the visual field has been described metaphorically as a moveable spotlight or zoom lens that facilitates the processing of stimuli within its 'beam'(2,3). A long-standing controversy has centred on the question of whether the spotlight of spatial attention has a unitary beam or whether it can be divided flexibly to disparate locations(2,4-6). Evidence supporting the unitary spotlight view has come from numerous behavioural(3,7-10) and electrophysiological(11,12) studies. Recent experiments, however, indicate that the spotlight of spatial attention may be divided between noncontiguous zones of the visual field for very brief stimulus exposures (