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Motor demands influence conflict processing in a mouse-tracking Simon task.

Victor Mittelstädt1, Hartmut Leuthold2, Ian Grant Mackenzie2

  • 1Department of Psychology, University of Tübingen, Schleichstraße 4, 72076, Tübingen, Germany. victor.mittelstaedt@uni-tuebingen.de.

Psychological Research
|November 20, 2022
PubMed
Summary
This summary is machine-generated.

Anticipating increased motor demands can help resolve perceptual conflict. This study found that higher motor task difficulty reduced distracting information effects, suggesting enhanced action control.

Keywords:
Cognitive controlConflict taskDelta plotsMotor controlMouse-trackingSimon effect

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Motor Control

Background:

  • Perceptual decisions under conflict are often accompanied by incorrect motor activation.
  • The role of motor processes in resolving cognitive conflict remains incompletely understood.

Purpose of the Study:

  • To investigate if increased anticipated motor processing demands can mitigate the impact of distracting information during perceptual decision-making.
  • To examine the influence of varying motor demands on conflict resolution mechanisms.

Main Methods:

  • Two mouse-tracking Simon experiments were conducted, manipulating blockwise motor demands (high vs. low).
  • Motor demands were varied by altering response box size (Experiment 1) or distance (Experiment 2).
  • Distributional analyses (delta plots) were used to control for fluctuations in distractor-based activation.

Main Results:

  • Simon effects, a measure of conflict, were significantly reduced under high motor demands compared to low motor demands.
  • This modulation of conflict by motor demands persisted even after controlling for distractor activation dynamics.
  • Findings suggest that anticipated motor costs influence conflict processing.

Conclusions:

  • Anticipation of motor demands can bias the competition between distractor-based and target-based activation at premotor and/or motor stages.
  • This provides evidence for the involvement of motor control mechanisms in cognitive conflict resolution.
  • The study highlights the adaptive nature of action control in managing perceptual interference.