Lin San-Yuan, Yeh Su-Ling
Department of Psychology, Graduate Institute of Brain and Mind Science, Neurobiology and Cognitive Science Center, National Taiwan University, Taipei, Taiwan.
Atten Percept Psychophys. 2012 Apr;74(3):533-9. doi: 10.3758/s13414-011-0245-0.
Detection of a target is faster when it is presented on an attended rather than an unattended object (i.e., object-based attention). Using the double-rectangle cuing paradigm (Egly, Driver, & Rafal, 1994), we previously showed that object-based attention operates on a dynamic representation: Object-based attentional guidance is affected by subsequent changes occurring to an attended object (Lin & Yeh, 2011). The present study provides further support for our dynamic-updating hypothesis, demonstrating that changes are indeed updated into the existing object representation. After a cue display, we introduced changes between the initial display (four hashes) and the final display (four squares with an occluder between them). We found object-based attention only with smooth transitions between the initial and final displays, not when transitions were in the reverse order (Exp. 1) or contained any single disruption of the smooth transition (Exp. 2). These results confirm our hypothesis that attention operates on a dynamic object representation that is constantly and continuously updated.
当目标呈现于被关注的物体而非未被关注的物体上时（即基于物体的注意），对目标的检测会更快。我们之前使用双矩形提示范式（Egly、Driver和Rafal，1994）表明，基于物体的注意作用于动态表征：基于物体的注意引导会受到被关注物体随后发生的变化的影响（Lin和Yeh，2011）。本研究为我们的动态更新假设提供了进一步支持，证明变化确实会被更新到现有的物体表征中。在提示显示之后，我们在初始显示（四个井号）和最终显示（四个方块，中间有一个遮挡物）之间引入了变化。我们发现，只有在初始显示和最终显示之间进行平滑过渡时，才会出现基于物体的注意，而当过渡顺序相反时（实验1）或包含任何对平滑过渡的单一干扰时（实验2）则不会出现。这些结果证实了我们的假设，即注意作用于一个不断且持续更新的动态物体表征。
