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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Similarity effects in visual working memory.

Yuhong V Jiang1, Hyejin J Lee2, Anthony Asaad2

  • 1Department of Psychology, University of Minnesota, 75 East River Road, S251 Elliott Hall, Minneapolis, MN, 55455, USA. jiang166@umn.edu.

Psychonomic Bulletin & Review
|July 24, 2015
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Summary
This summary is machine-generated.

Perceptual similarity impacts visual working memory. Complex stimuli like faces show that higher similarity improves memory accuracy, challenging previous findings with simpler stimuli.

Keywords:
Change detectionFace memorySimilarityVisual working memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Perceptual similarity is crucial for cognitive functions like reasoning and memory.
  • Previous research shows conflicting effects of inter-item similarity on visual working memory (VWM).
  • Discrepancies arise from stimulus complexity and category variations.

Purpose of the Study:

  • To clarify the role of stimulus conditions in similarity effects on VWM.
  • To investigate how similarity affects memory for complex stimuli (faces).

Main Methods:

  • Participants encoded sets of 3 faces varying in similarity (morph continuum).
  • Two conditions: similar (from one identity) and dissimilar (from different identities).
  • A same/different judgment task was used after a short delay.

Main Results:

  • Similarity significantly enhanced memory accuracy for complex stimuli.
  • No changes in response criterion were observed.
  • Findings align with models incorporating featural variance in VWM load.

Conclusions:

  • Perceptual similarity can benefit VWM for complex stimuli.
  • Results highlight limitations of models focusing solely on cortical resources or response bias.
  • Featural variance is a key factor in VWM load and performance.