The nature of item representations in memory.

我们研究的首要目标是了解记忆的本质和支持不同类型记忆表征形成和检索的神经系统。项目，以及它们的相对空间和时间关联，分别构成了“什么”，“在哪里”和“何时”，这是我们日常生活中事件记忆的基本组成部分。本研究的重点是研究项目记忆表征的本质。感知，并最终识别，一个项目可能受到两种不同类型的记忆的影响：对项目内的特征的记忆，以及对最初遇到该项目时与之相关的信息的记忆。我们将研究我们对单个项目的记忆在多大程度上最初是高度特异性的，以至于对一个项目特征的任何改变都会导致感知处理的变化和外显识别的下降。我们还将研究与项相关联的信息是否用于支持处理和识别，甚至改变项表示本身的性质，以便在各种情况下识别项。

The overarching goal of our research is to understand the nature of memory and the neural systems that support the formation and retrieval of different classes of memory representations. Items, as well as their relative spatial and temporal associations, comprise the 'what', 'where' and 'when', respectively, that are the essential building blocks of our memories for the daily events in our lives. The focus of this proposed research is on the nature of item memory representations. Perception, and ultimately, recognition, of an item may be affected by two different types of memory: memory for the features within the item, and memory for information that was associated with the item during the original encounter. We will investigate the extent to which our memories for single items are initially hyperspecific, such that any change made to a feature of an item causes a change in perceptual processing and a decline in explicit recognition. We will also examine whether information that has come to be associated with an item is used to support processing and recognition, and even changes the nature of the item representation itself, so that items may be recognized under a variety of circumstances.