Intrusions in episodic memory: reconsolidation or interference? 2017

Angela Klingmüller, and Jeremy B Caplan, and Tobias Sommer
Department for Systems Neuroscience, Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.

It would be profoundly important if reconsolidation research in animals and other memory domains generalized to human episodic memory. A 3-d-list-discrimination procedure, based on free recall of objects, with a contextual reminder cue (the testing room), has been thought to demonstrate reconsolidation of human episodic memory (as noted in a previous study). Our goal was to replicate the central result, a high intrusion rate during recall of the target list, and evaluate the reconsolidation account relative to an alternative account, based on state-dependent learning and interference. First, replication was not straightforward (Experiment 1). Second, using a very unique, highly salient context (Experiment 2), the method produced a qualitative replication, but it was small in magnitude. A critical assumption of the reconsolidation account, that the target list is reactivated and destabilized during re-exposure to the study context, was not supported (Experiment 3). Although troubling for the reconsolidation account, the findings can be easily accommodated by an alternative account that does not assume additional neurobiological processes underlying the destabilization of consolidated memories, instead explaining intrusion rates simply in terms of well-established cognitive effects, such as item-to-context binding and interference during retrieval.

UI MeSH Term Description Entries
D007858 Learning Relatively permanent change in behavior that is the result of past experience or practice. The concept includes the acquisition of knowledge. Phenomenography
D008297 Male Males
D011939 Mental Recall The process whereby a representation of past experience is elicited. Recall, Mental
D003463 Cues Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond. Cue
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000068156 Formative Feedback Information communicated to the learner that is intended to modify the learner’s thinking or behavior for the purpose of improving learning. Constructive Feedback,Feedback (Learning),Feedback, Constructive,Feedback, Formative
D000069077 Memory Consolidation Neurological process involving the conversion of learned information into long-term memory. Consolidation, Memory,Consolidations, Memory,Memory Consolidations
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000704 Analysis of Variance A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable. ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses

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