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Effects of verbal and nonverbal interference on spatial and object visual working memory

机译:言语和非言语干扰对空间和对象视觉工作记忆的影响

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摘要

We tested the hypothesis that a verbal coding mechanism is necessarily engaged by object, but not spatial, visual working memory tasks. We employed a dual-task procedure that paired n-back working memory tasks with domain-specific distractor trials inserted into each interstimulus interval of the n-back tasks. In two experiments, object n-back performance demonstrated greater sensitivity to verbal distraction, whereas spatial n-back performance demonstrated greater sensitivity to motion distraction. Visual object and spatial working memory may differ fundamentally in that the mnemonic representation of featural characteristics of objects incorporates a verbal (perhaps semantic) code, whereas the mnemonic representation of the location of objects does not. Thus, the processes supporting working memory for these two types of information may differ in more ways than those dictated by the “what/where” organization of the visual system, a fact more easily reconciled with a component process than a memory systems account of working memory function.
机译:我们测试了一种假设,即对象必须使用语言编码机制,而空间,视觉工作记忆任务则不需要。我们采用了双任务程序,将n-back工作记忆任务与n-back任务的每个激励间隔中插入的特定领域干扰试验配对。在两个实验中,对象的n背表现出对言语干扰的敏感性更高,而空间的n背表现出对动作干扰的敏感性更高。视觉对象和空间工作记忆可能在根本上有所不同,因为对象的特征特性的助记符表示结合了语言(也许是语义)代码,而对象位置的助记符则没有。因此,支持这两种信息的工作存储器的过程可能比视觉系统的“什么/何处”组织所指示的过程有更多不同,与存储系统的工作原因相比,事实更容易与组件过程协调记忆功能。

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