Artuso Caterina, Palladino Paola
Dipartimento di Psicologia, Università di Pavia, P. zza Botta 6, 27100 Pavia, Italy.
Acta Psychol (Amst). 2011 Mar;136(3):363-9. doi: 10.1016/j.actpsy.2011.01.001. Epub 2011 Jan 28.
The role of content-context binding in working memory updating has received only marginal interest, despite its undoubted relevance for the updating process. In the classical updating paradigm, the main focus has been on the process of discarding information when new information is presented. Its efficacy has been determined by measurement of the accuracy of recalled, updated information. In the current study we measured the working memory updating process directly, employing a dynamic memory task composed of alternating sequences of learning, active maintenance and updating phases. Binding was manipulated by changing the type of updating (total or partial) and the strength of the perceptual connection between items. The on-line updating process and the off-line efficacy were separately analysed. Both on-line and off-line measures indicated that partial updating conditions, where the operation of updating content-context binding was required, were more demanding than both total updating conditions and memory and maintenance phases. Our results suggest that working memory updating can be identified not only as a process of substitution of information, but also as inhibition of no longer relevant information and, above all, as a binding updating.
尽管内容-情境绑定在工作记忆更新中的作用对于更新过程无疑具有相关性，但它只受到了有限的关注。在经典的更新范式中，主要关注点在于当呈现新信息时丢弃信息的过程。其有效性通过对回忆出的更新后信息的准确性测量来确定。在当前研究中，我们直接测量了工作记忆更新过程，采用了一个由学习、主动维持和更新阶段交替序列组成的动态记忆任务。通过改变更新类型（全部或部分）以及项目之间感知连接的强度来操纵绑定。分别分析了在线更新过程和离线有效性。在线和离线测量均表明，需要进行更新内容-情境绑定操作的部分更新条件比全部更新条件以及记忆和维持阶段要求更高。我们的结果表明，工作记忆更新不仅可以被识别为信息替换的过程，还可以被识别为对不再相关信息的抑制，最重要的是，作为一种绑定更新。
