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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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Imagining is not seeing: lower insight-driven memory reconfiguration when imagining the link between separate events.

Anna-Maria Grob1, Branka Milivojevic2, Arjen Alink3,4

  • 1Department of Cognitive Psychology, Institute of Psychology, Universität Hamburg, Hamburg 20146, Germany.

Cerebral Cortex (New York, N.Y. : 1991)
|March 26, 2023
PubMed
Summary

Imagining events aids detailed memory recall, even if insight is weaker than direct observation. The brain shows different activity patterns, suggesting imagination may hinder immediate integration but boost long-term memory.

Keywords:
fMRIhippocampusimaginationinsightmemory integrationprefrontal cortexstriatum

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Memory Research

Background:

  • Insight into event relationships forms coherent episodes.
  • Insight can be gained through observation or imagination.
  • Mechanisms of mnemonic integration via imagination are unknown.

Purpose of the Study:

  • To investigate behavioral and neural effects of insight through imagination versus observation.
  • To elucidate how the brain accomplishes mnemonic integration via imagination.

Main Methods:

  • Used functional magnetic resonance imaging (fMRI) and representational similarity analysis.
  • Employed a narrative-insight task (NIT) with healthy participants.
  • Compared insight gained via video (observation) versus imagination instructions.

Main Results:

  • Insight via imagination was weaker than observation but yielded better detail memory.
  • Imagination group showed no representational change in the anterior hippocampus.
  • Imagination group had increased hippocampal and striatal activation during linking.

Conclusions:

  • Imagination-based insight differs neurally from observation-based insight.
  • Increased hippocampal and striatal activation during imagination may impede concurrent integration.
  • This neural recruitment during imagination might facilitate long-term memory consolidation.