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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Conflict Processing Is Unaffected by Stimulus Duration Across Multiple Visual Tasks: Evidence for Transient over

Ruben Ellinghaus1, Roman Liepelt1, Ian G Mackenzie2

  • 1Department of General Psychology: Judgment, Decision Making, Action, Faculty of Psychology, FernUniversität in Hagen, Hagen, Germany.

Computational Brain & Behavior
|July 16, 2026
PubMed
Summary

Distractor activation in visual conflict tasks is transient, not permanent. Study findings indicate stimulus duration does not significantly impact conflict processing, supporting transient activation models.

Keywords:
Action selectionConflict tasksDMCDelta plotsDiffusion modelFlanker taskSelective attentionSimon task

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Conflict tasks involve processing stimuli with distracting elements.
  • Models of conflict tasks differ on whether distractor influence is permanent or transient.
  • Understanding distractor dynamics is crucial for cognitive models.

Purpose of the Study:

  • To differentiate between permanent and transient activation models of conflict tasks.
  • To investigate the influence of stimulus duration on conflict processing.
  • To test predictions across various visual conflict paradigms.

Main Methods:

  • Contrasted permanent vs. transient activation models.
  • Utilized short (150 ms) and response-terminated stimulus durations.
  • Employed classic and accessory Simon, Eriksen flanker, and Stroop tasks.
  • Analyzed delta plot (DP) slopes and diffusion model for conflict tasks (DMC) parameters.

Main Results:

  • DP slopes were largely unaffected by stimulus duration across all tasks.
  • Results align with transient activation models, specifically the DMC.
  • The DMC parameter τ, reflecting distractor activation time course, was also unaffected by duration.

Conclusions:

  • Distractor activation in visual conflict tasks with manual responses is transient.
  • Stimulus duration generally does not influence conflict processing.
  • Findings support transient activation models over permanent ones for these tasks.