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Related Experiment Videos

Spatial scale and saccade programming

J M Findlay1, I D Gilchrist

  • 1Department of Psychology, University of Durham. j.m.findlay@durham.ac.uk

Perception
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

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The global effect in eye orienting guides saccades to a target's center of gravity. This visual-spatial integration is crucial for selecting eye movements, not just fast processing.

Area of Science:

  • Visual perception
  • Oculomotor control
  • Cognitive neuroscience

Background:

  • The global effect in eye orienting describes how saccades target the 'center of gravity' of stimuli.
  • Short-latency saccades are more susceptible to this effect than longer-latency ones.

Purpose of the Study:

  • To investigate the influence of stimulus features on the global effect during visual search.
  • To differentiate between potential explanations for the global effect.

Main Methods:

  • An experiment examined the global effect in a search task.
  • Stimulus features like contrast polarity and shape were varied for target-distractor combinations.

Main Results:

  • The global effect's time course differed significantly based on contrast polarity (black vs. white) compared to shape (circle vs. square).

Related Experiment Videos

  • This suggests feature-specific processing influences the global effect.

    • Conclusions:

    • The global effect is not solely a high-level strategic or automatic low-spatial-frequency processing effect.
    • Visual-spatial integration is an inherent component of selecting saccadic responses.