title: Temporal-pattern similarity analysis reveals the beneficial and detrimental effects of context reinstatement on human memory.
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.
authors.affiliation: Department of Psychology and tobias.staudigl@uni-konstanz.de s.hanslmayr@bham.ac.uk.
authors.forename: Tobias
authors.initials: T
authors.lastname: Staudigl
authors.affiliation: Epilepsy Center, Department of Neurology, University of Munich, D-81377 Munich, Germany, and.
authors.forename: Christian
authors.initials: C
authors.lastname: Vollmar
authors.affiliation: Epilepsy Center, Department of Neurology, University of Munich, D-81377 Munich, Germany, and.
authors.forename: Soheyl
authors.initials: S
authors.lastname: Noachtar
authors.affiliation: Department of Psychology and Zukunftskolleg, University of Konstanz, D-78457 Konstanz, Germany, School of Psychology, University of Birmingham, B15 2TT Birmingham, United Kingdom tobias.staudigl@uni-konstanz.de s.hanslmayr@bham.ac.uk.
authors.forename: Simon
authors.initials: S
authors.lastname: Hanslmayr
mesh_terms: D000328:Adult; D058256:Brain Waves / Q000502:physiology; D004569:Electroencephalography; D005260:Female; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D061212:Memory, Episodic; D011939:Mental Recall / Q000502:physiology*; D008959:Models, Neurological; D009040:Motion Pictures; D020534:Parahippocampal Gyrus / Q000502:physiology; D010775:Photic Stimulation; D014793:Visual Cortex / Q000502:physiology; D055815:Young Adult
keywords: MEG; episodic memory; intracranial EEG; oscillations
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