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Related Concept Videos

Working Memory01:24

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Related Experiment Video

Updated: May 15, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

Building blocks of visual working memory: objects or Boolean maps?

Mowei Shen1, Wenjun Yu, Xiaotian Xu

  • 1Zhejiang University, Hang Zhou, P R China.

Journal of Cognitive Neuroscience
|December 20, 2012
PubMed
Summary
This summary is machine-generated.

Visual working memory uses broad objects as building blocks, not strict objects or Boolean maps. This finding supports the broad object hypothesis for VWM information storage.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • The fundamental nature of information units in visual working memory (VWM) remains debated.
  • Current hypotheses include strict object, broad object, and Boolean map theories.
  • Previous research has not empirically tested these competing VWM models.

Purpose of the Study:

  • To investigate whether objects or Boolean maps serve as the primary building blocks in VWM.
  • To differentiate between the strict object, broad object, and Boolean map hypotheses.
  • To examine the role of object complexity and information overlap in VWM maintenance.

Main Methods:

  • Participants performed VWM tasks involving 2 distinct objects, 3 distinct objects, or 3 objects with repeated information (mixed-3-object).
  • Contralateral delay activity (CDA) was measured to assess VWM maintenance.
  • Stimuli included simple orientations and colors across three experiments.

Main Results:

  • CDA for the mixed-3-object condition was not significantly different from the 3-object condition.
  • Both mixed-3-object and 3-object conditions showed significantly higher CDA than the 2-object condition.
  • Findings suggest that VWM can represent information hierarchically, supporting the broad object hypothesis.

Conclusions:

  • The results support the broad object hypothesis, indicating that VWM units can be hierarchical.
  • Boolean maps may function as units for retrieval or comparison processes within VWM.
  • Future research should further explore the interplay between object-based representations and Boolean map theories in VWM.