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Related Experiment Videos

Stimulus-driven and goal-driven control over visual selection.

Casimir J H Ludwig1, Iain D Gilchrist

  • 1Department of Experimental Psychology, University of Bristol, Great Britain. c.ludwig@bristol.ac.uk

Journal of Experimental Psychology. Human Perception and Performance
|August 23, 2002
PubMed
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Goal-driven factors modulate visual selection. Abrupt onsets disrupt saccades, especially when colors match, while manual responses show varied interference based on task type.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Visual search relies on both stimulus-driven and goal-driven mechanisms.
  • Understanding the interplay between these mechanisms is crucial for explaining visual attention.

Purpose of the Study:

  • To investigate how goal-driven factors influence stimulus-driven control in visual selection.
  • To examine the impact of abrupt onsets on visual search performance under different response conditions.

Main Methods:

  • Participants performed a visual search task for a color target among distractors.
  • Additional distractors with or without abrupt onsets were introduced.
  • Responses were made either manually or via saccadic eye movements.

Related Experiment Videos

Main Results:

  • Abrupt onsets significantly disrupted saccades to the target, particularly when onset color matched the target color.
  • Manual responses were interfered with by irrelevant onsets, with the degree of interference varying by response type.
  • Both stimulus-driven and goal-driven capture effects were observed within the same experimental paradigm.

Conclusions:

  • The findings demonstrate that stimulus-driven visual selection is modulated by goal-driven factors.
  • The specific motor response required (saccade vs. manual) influences the susceptibility to attentional capture by salient stimuli.
  • This highlights the context-dependent nature of attentional control in visual perception.