记忆痕迹的通过仪式:重新巩固与持续巩固假说
Rites of passage of the engram: reconsolidation and the lingering consolidation hypothesis.
作者信息
Dudai Yadin, Eisenberg Mark
机构信息
Department of Neurobiology, The Weizmann Institute of Science, Rehovot 76100, Israel.
出版信息
Neuron. 2004 Sep 30;44(1):93-100. doi: 10.1016/j.neuron.2004.09.003.
Memory consolidation refers to the progressive stabilization of items in long-term memory as well as to the memory phase(s) during which this stabilization takes place. The textbook account is that, for each item in memory, consolidation starts and ends just once. In recent years, however, the notion that memories reconsolidate upon their reactivation and hence regain sensitivity to amnestic agents has been revitalized. This issue is of marked theoretical and clinical interest. Here we review the recent literature on reconsolidation and infer, on the basis of the majority of the data, that blockade of reconsolidation does not induce permanent amnesia. Further, in several systems, reconsolidation occurs only in relatively fresh memories. We propose a framework model, which interprets reconsolidation as a manifestation of lingering consolidation, rather than recapitulation of a process that had already come to a closure. This model reflects on the nature of consolidation in general and makes predictions that could guide further research.
记忆巩固是指长期记忆中项目的逐步稳定以及发生这种稳定的记忆阶段。教科书的说法是,对于记忆中的每个项目,巩固开始和结束各一次。然而,近年来,记忆在重新激活时会重新巩固并因此恢复对遗忘剂的敏感性这一概念重新受到关注。这个问题具有显著的理论和临床意义。在此,我们回顾了关于重新巩固的最新文献,并根据大多数数据推断,阻断重新巩固不会导致永久性失忆。此外,在几个系统中,重新巩固仅发生在相对新形成的记忆中。我们提出了一个框架模型,将重新巩固解释为持续巩固的一种表现,而不是已经结束的过程的重演。该模型反映了一般巩固的本质,并做出了可指导进一步研究的预测。