Temporal-pattern similarity analysis reveals the beneficial and detrimental effects of context reinstatement on human memory

Staudigl, T. , Vollmar, C. , Noachtar, S. and Hanslmayr, S. (2015) Temporal-pattern similarity analysis reveals the beneficial and detrimental effects of context reinstatement on human memory. Journal of Neuroscience, 35(13), pp. 5373-5384. (doi: 10.1523/JNEUROSCI.4198-14.2015) (PMID:25834061) (PMCID:PMC6705404)

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Abstract

A powerful force in human memory is the context in which memories are encoded (Tulving and Thomson, 1973). Several studies suggest that the reinstatement of neural encoding patterns is beneficial for memory retrieval (Manning et al., 2011; Staresina et al., 2012; Jafarpour et al., 2014). However, reinstatement of the original encoding context is not always helpful, for instance, when retrieving a memory in a different contextual situation (Smith and Vela, 2001). It is an open question whether such context-dependent memory effects can be captured by the reinstatement of neural patterns. We investigated this question by applying temporal and spatial pattern similarity analysis in MEG and intracranial EEG in a context-match paradigm. Items (words) were tagged by individual dynamic context stimuli (movies). The results show that beta oscillatory phase in visual regions and the parahippocampal cortex tracks the incidental reinstatement of individual context trajectories on a single-trial level. Crucially, memory benefitted from reinstatement when the encoding and retrieval contexts matched but suffered from reinstatement when the contexts did not match.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hanslmayr, Professor Simon
Authors: Staudigl, T., Vollmar, C., Noachtar, S., and Hanslmayr, S.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
Journal Name:Journal of Neuroscience
Publisher:The Society for Neuroscience
ISSN:0270-6474
ISSN (Online):1529-2401

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