The price of fame: the impact of stimulus familiarity on proactive interference resolution.

The price of fame: the impact of stimulus familiarity on proactive interference resolution.
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DOI:
10.1162/jocn.2010.21501
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发表时间:
2011-04
影响因子:
3.2
通讯作者:
Thompson-Schill SL
Thompson-Schill SL
中科院分区:
医学3区
文献类型:
--
作者:
Prabhakaran R;Thompson-Schill SL

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来自先前学到的信息的干扰,称为主动干扰(PI),限制了我们的记忆提取能力。先前关于 PI 解决方案的研究主要集中在短期熟悉度或新近度在导致 PI 中的作用。在本研究中,我们研究了长期刺激熟悉度对 PI 解决过程的影响。在两项行为实验和一项与事件相关的功能磁共振成像实验中,长期熟悉度是通过使用著名和不著名的刺激来操纵的,短期熟悉度是通过在项目识别任务中使用最近和非最近的探测项目来操纵的。右额中回对著名刺激表现出更高的敏感性,这表明长期刺激熟悉度在影响 PI 解析过程中发挥着作用。进一步检查长期刺激熟悉度对 PI 分辨率的影响发现,对著名刺激有较大的行为干扰效应,但仅限于快速反应条件下。因此,记忆检索模型以及指导检索过程的认知控制机制应该考虑熟悉来源在多个时间尺度上的影响和相互作用。
Interference from previously learned information, known as proactive interference (PI), limits our memory retrieval abilities. Previous studies of PI resolution have focused on the role of short-term familiarity, or recency, in causing PI. In the present study, we investigated the impact of long-term stimulus familiarity on PI resolution processes. In two behavioral experiments and one event-related fMRI experiment, long-term familiarity was manipulated through the use of famous and nonfamous stimuli, and short-term familiarity was manipulated through the use of recent and nonrecent probe items in an item recognition task. The right middle frontal gyrus demonstrated greater sensitivity to famous stimuli, suggesting that long-term stimulus familiarity plays a role in influencing PI resolution processes. Further examination of the effect of long-term stimulus familiarity on PI resolution revealed a larger behavioral interference effect for famous stimuli, but only under speeded response conditions. Thus, models of memory retrieval—and of the cognitive control mechanisms that guide retrieval processes—should consider the impact of and interactions among sources of familiarity on multiple time scales.
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