Cited by 95Memory and Neural MechanismsNeural dynamics and brain functionVestibular and auditory disorders

Laminar organization of encoding and memory reactivation in the parietal cortex

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Wilber, Aaron A., Skelin, Ivan, Wu, Wei, McNaughton, Bruce L.·2017·Neuron

Published version of a preprint

Abstract

Egocentric neural coding has been observed in parietal cortex (PC), but its topographical and laminar organization is not well characterized. We used multi-site recording to look for evidence of local clustering and laminar consistency of linear and angular velocity encoding in multi-neuronal spiking activity (MUA) and in the high-frequency (300-900 Hz) component of the local field potential (HF-LFP), believed to reflect local spiking activity. Rats were trained to run many trials on a large circular platform, either to LED-cued goal locations or as a spatial sequence from memory. Tuning to specific self-motion states was observed and exhibited distinct cortical depth-invariant coding properties. These patterns of collective local and laminar activation during behavior were reactivated in compressed form during post-experience sleep and temporally coupled to cortical delta waves and hippocampal sharp-wave ripples. Thus, PC neuron motion encoding is consistent across cortical laminae, and this consistency is maintained during memory reactivation.

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Crossref · 10.1016/j.neuron.2017.08.033

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  • Reactivations in extrahippocampal/cortical areas tend to coincide with oscillatory hallmarks of memory consolidation during sleep, such as SOs and spindles, and with hippocampal SPW-Rs.

    “Reactivations in extrahippocampal/cortical areas tend to coincide with oscillatory hallmarks of memory consolidation during sleep, such as SOs and spindles, 65,88,90,96 but also with hippocampal SPW-Rs, 96,99,101,103”

    From Sleep—A brain-state serving systems memory consolidation (2023) · cites this paper as [96]

    The Discussion reports enhanced reactivation of behavioral templates in rat parietal cortex simultaneously with cortical delta waves and hippocampal CA1 sharp-wave ripples during sleep. This supports the cortical-reactivation and hippocampal-ripple portions, but our copy does not establish coincidence with sleep spindles or specifically identify the delta waves as slow oscillations (SOs). (LLM, conf=0.86)

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Authors
Wilber, A. A., Skelin, I., Wu, W., & McNaughton, B. L.
Affiliations
  • Florida State University (US)
  • University of Lethbridge (CA)
Corresponding author
  • Wilber, Aaron A.
  • Skelin, Ivan
Venue
Neuron
Publisher
Elsevier BV
Published
2017-09
Volume
95
Issue
6
Pages
1406-1419.e5
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2952334031
Cited by
95
References
90
Citations by year
2026: 1 · 2025: 5 · 2024: 11 · 2023: 10 · 2022: 7 · 2021: 13 · 2020: 14 · 2019: 15 · 2018: 15 · 2017: 4
FWCI
7.54
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • NIH National Institute on Aging (AG049090)
  • NIH National Institute for Mental Health (MH4682316)
  • Alberta Innovates Health Solutions Fellowship
  • Alberta Innovates Health Solutions Polaris Award
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Neurology › Vestibular and auditory disorders
Keywords
parietal cortex, laminar organization, memory reactivation, sleep, delta oscillations, sharp-wave ripples, hippocampus, local field potentials, spatial navigation, rats
MeSH terms
Animals, Hippocampus, Locomotion, Male, Memory, Neurons, Parietal Lobe, Self Stimulation, Sleep, Rats

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