Cited by 7Memory and Neural MechanismsMemory Processes and InfluencesSpatial Cognition and Navigation

Differential involvement of the anterior and posterior hippocampus, parahippocampus, and retrosplenial cortex in making precise judgments of spatial distance and object size for remotely acquired memories of environments and objects

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Ziegler, Marilyne G, Liu, Zhong-Xu, Arsenault, Jessica, Dang, Christa, Grady, Cheryl, Rosenbaum, R Shayna, Moscovitch, Morris·2023·Cerebral Cortex

Abstract

The hippocampus is known to support processing of precise spatial information in recently learned environments. It is less clear, but crucial for theories of systems consolidation, to know whether it also supports processing of precise spatial information in familiar environments learned long ago and whether such precision extends to objects and numbers. In this fMRI study, we asked participants to make progressively more refined spatial distance judgments among well-known Toronto landmarks (whether landmark A is closer to landmark B or C) to examine hippocampal involvement. We also tested whether the hippocampus was similarly engaged in estimating magnitude regarding sizes of familiar animals and numbers. We found that the hippocampus was only engaged in spatial judgment. Activation was greater and lasted longer in the posterior than anterior hippocampus, which instead showed greater modulation as discrimination between spatial distances became more fine grained. These findings suggest that the anterior and posterior hippocampus have different functions which are influenced differently by estimation of differential distance. Similarly, parahippocampal-place-area and retrosplenial cortex were involved only in the spatial condition. By contrast, activation of the intraparietal sulcus was modulated by precision in all conditions. Therefore, our study supports the idea that the hippocampus and related structures are implicated in retrieving and operating even on remote spatial memories whenever precision is required, as posted by some theories of systems consolidation.

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  • The underlying neural substrates are probably dynamically activated to varying degrees based on past experiences and current task demands, with each activation influencing the organization and structure of the retrieved memory.

    “The underlying neural substrates are probably dynamically activated to varying degrees based on past experiences and current task demands, with each activation influencing the organization and structure of the retrieved memory15.”

    From Long-term Memory Reorganization of Navigational Episodes (2026) · cites this paper as [15]

    The Discussion (page unavailable) reports that hippocampal activation varies with the precision required by a spatial judgment and describes a shift in anterior and posterior activation during the task. It also conjectures that early anterior activation helps construct a scene. The paper does not establish that past experiences determine the degree of activation or that each activation changes the organization and structure of the retrieved memory. (LLM, conf=0.82)

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Research works printed but not linked: 3

  1. Corkin S. Permanent present tense: the unforgettable life of the amnesic patient, H. M. 1st. edition. ed. New York: Basic Books; 2013
  2. Fischl B. FreeSurfer. NeuroImage. 2012:62(2):774-781.
  3. Moscovitch M, Fernandes MA, Troyer A. Working-with-memory and cognitive resources: a component-process account of divided attention and memory. In: Naveh-Benjamin M, Moscovitch M, Roediger HL III, editors. Perspectives on human memory and cognitive aging: essays in honor of Fergus Craik. New York: Psychology Press; 2001.

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Authors
Ziegler, M. G., Liu, Z.-X., Arsenault, J., Dang, C., Grady, C., Rosenbaum, R. S., & Moscovitch, M.
Affiliations
  • University of Toronto (CA)
  • University of Michigan–Dearborn (US)
  • Baycrest Academy for Research and Education (CA)
  • York University (CA)
Venue
Cerebral Cortex
Published
2023-07-29
Volume
33
Issue
18
Pages
10139-10154
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W4385406867
Cited by
6
References
116
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 1
FWCI
0.90
Type
journal article
Language
en
Open access
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research (MOP125958)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
Keywords
hippocampus, anterior hippocampus, posterior hippocampus, parahippocampal place area, retrosplenial cortex, intraparietal sulcus, object size estimation, remote memory retrieval, systems consolidation, spatial precision
MeSH terms
Animals, Gyrus Cinguli, Hippocampus, Judgment, Magnetic Resonance Imaging, Memory, Long-Term, Spatial Memory

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