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首页> 外文期刊>Neuron >Episodic encoding is more than the sum of its parts: an fMRI investigation of multifeatural contextual encoding.
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Episodic encoding is more than the sum of its parts: an fMRI investigation of multifeatural contextual encoding.

机译：情景编码不仅仅是其各个部分的总和：fMRI对多特征上下文编码的研究。

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Episodic memories are characterized by their contextual richness, yet little is known about how the various features comprising an episode are brought together in memory. Here we employed fMRI and a multidimensional source memory procedure to investigate processes supporting the mnemonic binding of item and contextual information. Volunteers were scanned while encoding items for which the contextual features (color and location) varied independently, allowing activity elicited at the time of study to be segregated according to whether both, one, or neither feature was successfully retrieved on a later memory test. Activity uniquely associated with successful encoding of both features was identified in the intra-parietal sulcus, a region strongly implicated in the support of attentionally mediated perceptual binding. The findings suggest that the encoding of disparate features of an episode into a common memory representation requires that the features be conjoined in a common perceptual representation when the episode is initially experienced.
机译：情节记忆的特征是上下文丰富，但是对于组成情节的各种特征如何汇集到记忆中却知之甚少。在这里，我们采用功能磁共振成像和多维源存储过程来调查支持项目和上下文信息的助记符绑定的过程。在对志愿者进行编码的同时对志愿者进行了扫描，这些项目的上下文特征（颜色和位置）独立变化，从而可以根据在随后的记忆测试中是否成功检索到这两个特征，来分离研究时引发的活动。在顶内沟中发现了与两个特征的成功编码唯一相关的活动，该区域强烈参与了注意力介导的知觉结合的支持。研究结果表明，将一集的不同特征编码为一个共同的记忆表示形式，要求在最初经历该集时将这些特征以一个共同的感知表示形式结合起来。

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