Cited by 118Visual perception and processing mechanismsMemory and Neural MechanismsNeural dynamics and brain function

Structure learning and the posterior parietal cortex

Summerfield, Christopher, Luyckx, Fabrice, Sheahan, Hannah·2020·Progress in Neurobiology

Abstract

We propose a theory of structure learning in the primate brain. We argue that the parietal cortex is critical for learning about relations among the objects and categories that populate a visual scene. We suggest that current deep learning models exhibit poor global scene understanding because they fail to perform the relational inferences that occur in the primate dorsal stream. We review studies of neural coding in primate posterior parietal cortex (PPC), drawing the conclusion that neurons in this brain area represent potentially high-dimensional inputs on a low-dimensional manifold that encodes the relative position of objects or features in physical space, and relations among entities in abstract conceptual space. We argue that this low-dimensional code supports generalisation of relational information, even in nonspatial domains. Finally, we propose that structure learning is grounded in the actions that primates take when they reach for objects or fixate them with their eyes. We sketch a model of how this might occur in neural circuits.

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Crossref · 10.1016/j.pneurobio.2019.101717

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  • A posterior region, such as AG, may bind the contents and the structure of experience at a higher level of abstraction than does the HPC and is probably an important area for relating spatial gists to spatial schema.

    “A posterior region, such as AG, may bind the contents and the structure of experience at a higher level of abstraction than does the HPC 161 and, thus, is probably an important area for relating spatial gists to spatial schema (summarised in Fig. 1).”

    From From cognitive maps to spatial schemas (2023) · cites this paper as [161]

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Authors
Summerfield, C., Luyckx, F., & Sheahan, H.
Affiliations
University of Oxford (GB)
Corresponding author
Summerfield, Christopher
Venue
Progress in Neurobiology
Publisher
Elsevier BV
Published
2020-01
Volume
184
Pages
101717
ISSN
0301-0082 (ISSN-L)
OpenAlex
W2981514504
Cited by
118
References
103
Citations by year
2026: 12 · 2025: 19 · 2024: 23 · 2023: 15 · 2022: 25 · 2021: 12 · 2020: 10 · 2019: 2
FWCI
7.12
Type
journal article
Language
en
Open access
closed
Locations
  • Progress in Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Horizon 2020
  • European Research Council
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
structure learning, posterior parietal cortex, relational inference, dorsal stream, scene understanding, neural coding, conceptual space, action-based learning, deep learning limitations
MeSH terms
Deep Learning, Animals, Gestalt Theory, Humans, Learning, Models, Biological, Parietal Lobe, Primates, Space Perception, Visual Perception, Mathematical Concepts

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