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Gaze-pattern similarity at encoding may interfere with future memory.

Nathalie Klein Selle1,2, Matthias Gamer3, Yoni Pertzov4

  • 1Department of Psychology, Hebrew University of Jerusalem, Mt. Scopus, 91905, Jerusalem, Israel. nathalie.kleinselle1@mail.huji.ac.il.

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Summary
This summary is machine-generated.

Higher gaze similarity between visual stimuli impairs memory, even when motivated to forget. This effect depends on perceptual overlap, suggesting a mechanism for regulating unwanted memories.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Memory Regulation

Background:

  • Human brains can segregate visual input streams into distinct memory traces.
  • The relationship between visual exploration patterns (gaze) and memory separation is not well understood.
  • The influence of motivational states (forgetting vs. remembering) on gaze-memory links remains unclear.

Purpose of the Study:

  • To investigate the link between gaze similarity across visual stimuli and memory performance.
  • To determine if motivation to forget or remember influences this gaze similarity-memory relationship.
  • To explore the role of perceptual overlap in the interference effect between similar gaze patterns.

Main Methods:

  • Two experiments employed a modified directed-forgetting paradigm.
  • Participants viewed blurred scenes or pink noise images during attempted memory control.
  • Gaze patterns were recorded and analyzed for across-stimulus similarity.

Main Results:

  • Increased across-stimulus gaze similarity was associated with poorer future memory recall.
  • This interference effect was independent of the motivation to forget or remember.
  • The effect was contingent on perceptual overlap, being stronger for scene-scene comparisons than scene-noise comparisons.

Conclusions:

  • Gaze similarity acts as an interference mechanism impacting memory encoding and retrieval.
  • This finding aligns with neuroimaging studies on pattern similarity effects.
  • The results suggest a potential neural mechanism for regulating unwanted memories based on visual input similarity.