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No role for activated long-term memory in attentional control settings.

Lindsay Plater1, Maria Giammarco1, Chris Fiacconi1

  • 1Department of Psychology, University of Guelph.

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Long-term memory (LTM) representations do not need to be in activated LTM to guide visual attention. Activated LTM does not determine attentional control sets, challenging existing theories.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Visual spatial attentional capture is influenced by attentional control settings.
  • Observers can form attentional control settings using long-term memory (LTM) representations.
  • The precise mechanism by which LTM representations influence attentional capture remains unclear.

Purpose of the Study:

  • To test the "activated LTM account" which posits that LTM representations form attentional control sets only if they are in activated LTM.
  • To investigate the relationship between activated LTM and attentional control settings in visual attention.
  • To determine if activated LTM representations guide attentional capture.

Main Methods:

  • Combined a working memory task to assess activated LTM with a spatial blink task to evaluate attentional control settings.
  • Experimentally manipulated the activation state of LTM representations.
  • Measured intrusion effects and attentional capture effects.

Main Results:

  • Inducing activated LTM did not lead to the formation of attentional control sets in Experiments 1 and 2.
  • Experiment 3 revealed a dissociation: activated LTM objects showed greater intrusion but less capture than attentional control set objects.
  • Results did not support the activated LTM account.

Conclusions:

  • Representation in activated LTM is not the determining factor for LTM representations forming attentional control sets.
  • Findings challenge the activated LTM account of attentional control.
  • Implications for attentional templates and visual search theories require re-evaluation.