Cited by 288Memory and Neural MechanismsNeural dynamics and brain functionMemory Processes and Influences

Hippocampal-prefrontal theta oscillations support memory integration

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Backus, Alexander R., Schoffelen, Jan-Mathijs, Szebényi, Szabolcs, Hanslmayr, Simon, Doeller, Christian F.·2016·Current Biology

Abstract

Integration of separate memories forms the basis of inferential reasoning--an essential cognitive process that enables complex behavior. Considerable evidence suggests that both hippocampus and medial prefrontal cortex (mPFC) play a crucial role in memory integration. Although previous studies indicate that theta oscillations facilitate memory processes, the electrophysiological mechanisms underlying memory integration remain elusive. To bridge this gap, we recorded magnetoencephalography data while participants performed an inference task and employed novel source reconstruction techniques to estimate oscillatory signals from the hippocampus. We found that hippocampal theta power during encoding predicts subsequent memory integration. Moreover, we observed increased theta coherence between hippocampus and mPFC. Our results suggest that integrated memory representations arise through hippocampal theta oscillations, possibly reflecting dynamic switching between encoding and retrieval states, and facilitating communication with mPFC. These findings have important implications for our understanding of memory-based decision making and knowledge acquisition.

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Authors
Backus, A. R., Schoffelen, J.-M., Szebényi, S., Hanslmayr, S., & Doeller, C. F.
Affiliations
  • Radboud University Nijmegen (NL)
  • University of Birmingham (GB)
Corresponding author
  • Backus, Alexander R.
  • Doeller, Christian F.
Venue
Current Biology
Publisher
Elsevier BV
Published
2016-02
Volume
26
Issue
4
Pages
450-457
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2269315604
Cited by
288
References
52
Citations by year
2026: 24 · 2025: 32 · 2024: 34 · 2023: 19 · 2022: 28 · 2021: 29 · 2020: 26 · 2019: 31 · 2018: 30 · 2017: 20 · 2016: 15
FWCI
20.36
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
  • Max Planck Digital Library (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, other-oa)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (864.14.011)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
hippocampal theta oscillations, medial prefrontal cortex, memory integration, inferential reasoning, theta coherence, memory retrieval, source localization, memory-based decision making, knowledge acquisition
MeSH terms
Adolescent, Adult, Decision Making, Female, Hippocampus, Humans, Male, Memory, Theta Rhythm, Magnetoencephalography, Prefrontal Cortex, Young Adult

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