Cited by 1,014Neural dynamics and brain functionMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Prefrontal phase locking to hippocampal theta oscillations

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Siapas, Athanassios G., Lubenov, Evgueniy V., Wilson, Matthew A.·2005·Neuron

Abstract

The interactions between cortical and hippocampal circuits are critical for memory formation, yet their basic organization at the neuronal network level is not well understood. Here, we demonstrate that a significant portion of neurons in the medial prefrontal cortex of freely behaving rats are phase locked to the hippocampal theta rhythm. In addition, we show that prefrontal neurons phase lock best to theta oscillations delayed by approximately 50 ms and confirm this hippocampo-prefrontal directionality and timing at the level of correlations between single cells. Finally, we find that phase locking of prefrontal cells is predicted by the presence of significant correlations with hippocampal cells at positive delays up to 150 ms. The theta-entrained activity across cortico-hippocampal circuits described here may be important for gating information flow and guiding the plastic changes that are believed to underlie the storage of information across these networks.

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Crossref · 10.1016/j.neuron.2005.02.028

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Authors
Siapas, A. G., Lubenov, E. V., & Wilson, M. A.
Affiliations
  • California Institute of Technology (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Siapas, Athanassios G.
Venue
Neuron
Publisher
Elsevier BV
Published
2005-04
Volume
46
Issue
1
Pages
141-151
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2129217278
Cited by
1,014
References
58
Citations by year
2026: 33 · 2025: 47 · 2024: 53 · 2023: 47 · 2022: 47 · 2021: 63 · 2020: 54 · 2019: 40 · 2018: 50 · 2017: 55 · 2016: 45 · 2015: 56 · 2014: 47 · 2013: 63 · 2012: 48
FWCI
17.04
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
phase locking, hippocampal theta rhythm, medial prefrontal cortex, neuronal synchronization, memory formation, single-unit activity
MeSH terms
Animals, Hippocampus, Male, Neural Pathways, Neurons, Theta Rhythm, Prefrontal Cortex, Rats

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