Schematic memory components converge within angular gyrus during retrieval

  1. Isabella C Wagner  Is a corresponding author
  2. Mariët van Buuren
  3. Marijn CW Kroes
  4. Tjerk P Gutteling
  5. Marieke van der Linden
  6. Richard G Morris
  7. Guillén Fernández
  1. Radboud University Nijmegen, Netherlands
  2. University of Edinburgh, United Kingdom

Abstract

Mental schemas form associative knowledge structures that can promote the encoding and consolidation of new and related information. Schemas are facilitated by a distributed system that stores components separately, presumably in the form of inter-connected neocortical representations. During retrieval, these components need to be recombined into one representation, but where exactly such recombination takes place is unclear. Thus, we asked where different schema components are neuronally represented and converge during retrieval. Subjects acquired and retrieved two well-controlled, rule-based schema structures during fMRI on consecutive days. Schema retrieval was associated with midline, medial-temporal, and parietal processing. We identified the multi-voxel representations of different schema components, which converged within the angular gyrus during retrieval. Critically, convergence only happened after 24-hour-consolidation and during a transfer test where schema material was applied to novel but related trials. Therefore, the angular gyrus appears to recombine consolidated schema components into one memory representation.

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Author details

  1. Isabella C Wagner

    Radboudumc, Radboud University Nijmegen, Nijmegen, Netherlands
    For correspondence
    i.wagner@donders.ru.nl
    Competing interests
    The authors declare that no competing interests exist.
  2. Mariët van Buuren

    Radboudumc, Radboud University Nijmegen, Nijmegen, Netherlands
    Competing interests
    The authors declare that no competing interests exist.
  3. Marijn CW Kroes

    Nijmegen, Radboud University Nijmegen, New York, Netherlands
    Competing interests
    The authors declare that no competing interests exist.
  4. Tjerk P Gutteling

    Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands
    Competing interests
    The authors declare that no competing interests exist.
  5. Marieke van der Linden

    Radboudumc, Radboud University Nijmegen, Nijmegen, Netherlands
    Competing interests
    The authors declare that no competing interests exist.
  6. Richard G Morris

    Centre for Cognitive and Neural Systems, University of Edinburgh, Edinburgh, United Kingdom
    Competing interests
    The authors declare that no competing interests exist.
  7. Guillén Fernández

    Radboudumc, Radboud University Nijmegen, Nijmegen, Netherlands
    Competing interests
    The authors declare that no competing interests exist.

Ethics

Human subjects: All subjects gave written informed consent prior to participation. The study was conducted according to protocol approved by the institutional review board (CMO Region Arnhem-Nijmegen, The Netherlands).

Copyright

© 2015, Wagner et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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  1. Isabella C Wagner
  2. Mariët van Buuren
  3. Marijn CW Kroes
  4. Tjerk P Gutteling
  5. Marieke van der Linden
  6. Richard G Morris
  7. Guillén Fernández
(2015)
Schematic memory components converge within angular gyrus during retrieval
eLife 4:e09668.
https://doi.org/10.7554/eLife.09668

Share this article

https://doi.org/10.7554/eLife.09668

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