Treisman Anne, Zhang Weiwei
Department of Psychology, Princeton University, Princeton, NJ 08544, USA.
Mem Cognit. 2006 Dec;34(8):1704-19. doi: 10.3758/bf03195932.
Visual working memory (VWM) wa sexplored separatelyfor features and for their binding. Features were better recognized when the probes retained the same binding as in the original display, but changing the locations had little effect overall. However, there were strong interactions of location with binding and with matching or new features, suggesting that, when objects are attended, features and locations are spontaneously integrated in VWM. Despite this, when the locations arechanged, features can also be accessed with little decrement, perhaps from separate feature maps. Bindings, on the other hand, are more vulnerable to location changes, suggesting that locations play a central role in the early maintenance and retrieval of bound objects as well as in their initial encoding, at least when verbal coding is prevented. The results qualify past claims about the separation of locations and objects in VWM.
视觉工作记忆(VWM)针对特征及其绑定分别进行了研究。当探测刺激保持与原始显示相同的绑定时,特征能得到更好的识别,但改变位置总体上影响不大。然而,位置与绑定以及与匹配或新特征之间存在强烈的相互作用,这表明当关注对象时,特征和位置会在视觉工作记忆中自发整合。尽管如此,当位置改变时,特征仍能以较小的下降幅度被访问,这可能是通过单独的特征图实现的。另一方面,绑定对位置变化更为敏感,这表明位置在绑定对象的早期维持和检索以及初始编码中起着核心作用,至少在防止言语编码时是这样。这些结果修正了过去关于视觉工作记忆中位置和对象分离的说法。