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Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
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Related Experiment Video

Updated: Sep 19, 2025

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking
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Selectively attended information is obligatorily encoded into visual working memory.

Zachary Hamblin-Frohman1, Jay Pratt1

  • 1Department of Psychology, University of Toronto.

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Summary

Selectively attending to an item automatically encodes it into visual working memory (VWM). This research clarifies the link between selective attention and VWM, demonstrating obligatory encoding of attended items.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • A bidirectional relationship exists between visual attention and visual working memory (VWM).
  • Previous research suggests attentional selection interferes with VWM, but the exact mechanism remains debated.
  • The selective-encoding hypothesis proposes automatic VWM encoding of attended items.

Purpose of the Study:

  • To investigate the selective-encoding hypothesis regarding visual attention and VWM.
  • To determine if selective attention automatically encodes items into VWM.
  • To clarify the link between selective attention and VWM.

Main Methods:

  • Participants performed visual search tasks across multiple trials (T1 and T2) with varying conditions (selection vs. target alone, matching vs. neutral distractors).
  • Eye movements and response times were measured to assess distraction effects.
  • Experiment 3 manipulated VWM capacity to establish a causal link between attention-driven capture and VWM.

Main Results:

  • A greater distraction effect from matching distractors occurred when targets were selected in T1 compared to target-alone conditions.
  • This interaction was consistent across different search parameters.
  • When VWM was at capacity, the influence of the T1 selectively attended target on T2 distraction was eliminated, supporting a causal link.

Conclusions:

  • Evidence supports the obligatory encoding of selectively attended items into VWM.
  • Selective attention automatically influences VWM content.
  • This finding clarifies a critical link between selective attention and VWM.