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Updated: Dec 30, 2025

Quantifying Intermembrane Distances with Serial Image Dilations
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Boundaries Extend and Contract in Scene Memory Depending on Image Properties.

Wilma A Bainbridge1, Chris I Baker1

  • 1Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD 20814, USA.

Current Biology : CB
|January 28, 2020
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Summary

Boundary extension, a memory distortion, is not universal. New research reveals boundary contraction is equally common, driven by image composition rather than automatic schema extrapolation in scene memory.

Keywords:
boundary extensionboundary transformationsdrawingsmemoryscenes

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Boundary extension, a memory distortion, is widely accepted in psychological sciences.
  • It suggests scene memory involves sensory information and schema-based extrapolation.
  • Previous studies focused on object-oriented images, potentially limiting generalizability.

Purpose of the Study:

  • To investigate boundary extension and contraction phenomena in scene memory.
  • To determine the influence of image composition on these memory distortions.
  • To challenge the assumption of automatic schema integration in scene memory.

Main Methods:

  • A large-scale study with 1,000 images and 2,000 participants.
  • Utilized a rapid recognition task to assess memory recall.
  • Included drawing tasks, even with minimal memory load, to observe effects.

Main Results:

  • Discovered "boundary contraction" as a robust phenomenon, equally prevalent as boundary extension.
  • Image composition significantly influences whether extension or contraction occurs.
  • Object-oriented images led to more boundary extension, while scene-oriented images led to more boundary contraction.

Conclusions:

  • Boundary extension is not a universal memory phenomenon.
  • Scene memory appears driven by visual composition, not solely schema integration.
  • The tendency to extend or contract scene boundaries is equally likely.