Cited by 119Memory Processes and InfluencesMemory and Neural MechanismsFunctional Brain Connectivity Studies

Multiple interacting brain areas underlie successful spatiotemporal memory retrieval in humans

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Schedlbauer, Amber M., Copara, Milagros S., Watrous, Andrew J., Ekstrom, Arne D.·2014·Scientific Reports

Abstract

Emerging evidence suggests that our memories for recent events depend on a dynamic interplay between multiple cortical brain regions, although previous research has also emphasized a primary role for the hippocampus in episodic memory. One challenge in determining the relative importance of interactions between multiple brain regions versus a specific brain region is a lack of analytic approaches to address this issue. Participants underwent neuroimaging while retrieving the spatial and temporal details of a recently experienced virtual reality environment; we then employed graph theory to analyze functional connectivity patterns across multiple lobes. Dense, large-scale increases in connectivity during successful memory retrieval typified network topology, with individual participant performance correlating positively with overall network density. Within this dense network, the hippocampus, prefrontal cortex, precuneus, and visual cortex served as "hubs" of high connectivity. Spatial and temporal retrieval were characterized by distinct but overlapping "subnetworks" with higher connectivity within posterior and anterior brain areas, respectively. Together, these findings provide new insight into the neural basis of episodic memory, suggesting that the interactions of multiple hubs characterize successful memory retrieval. Furthermore, distinct subnetworks represent components of spatial versus temporal retrieval, with the hippocampus acting as a hub integrating information between these two subnetworks.

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  • Interacting networks of brain regions including specialized hubs help to support navigation and spatial memory.

    “Interacting networks of brain regions including specialized 'hubs' help to support navigation and spatial memory 61,[142][143][144] (Fig. 1).”

    From From cognitive maps to spatial schemas (2023) · cites this paper as [142]

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Authors
Schedlbauer, A. M., Copara, M. S., Watrous, A. J., & Ekstrom, A. D.
Affiliations
University of California, Davis (US)
Corresponding author
Ekstrom, Arne D.
Venue
Scientific Reports
Published
2014-09-19
Volume
4
Issue
1
Pages
6431-6431
ISSN
2045-2322 (ISSN-L)
OpenAlex
W1978339901
Cited by
119
References
54
Citations by year
2026: 6 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 10 · 2021: 5 · 2020: 10 · 2019: 17 · 2018: 10 · 2017: 24 · 2016: 14 · 2015: 10 · 2014: 1
FWCI
9.11
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
Funders
  • Alfred P. Sloan Foundation
  • University of California, Davis
  • National Institute of Neurological Disorders and Stroke (R01NS076856)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
episodic memory, memory retrieval, spatiotemporal memory, hippocampus, functional connectivity, brain network topology, network hubs, prefrontal cortex, precuneus, visual cortex, virtual reality environments, network subnetworks, recent memory
MeSH terms
Adult, Brain Mapping, Female, Hippocampus, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Memory, Radiography, User-Computer Interface, Visual Cortex, Prefrontal Cortex

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