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Published on: August 25, 2020

Changing target trajectories influences tracking performance.

Justin M Ericson1, Melissa R Beck

  • 1Louisiana State University, Baton Rouge, LA, USA, jerics1@lsu.edu.

Psychonomic Bulletin & Review
|March 23, 2013
PubMed
Summary
This summary is machine-generated.

Tracking multiple moving objects becomes harder with more unexpected trajectory changes. Spatial proximity did not impact performance, suggesting direction changes are key limitations in multiple-object tracking (MOT).

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Human Attention

Background:

  • Multiple-object tracking (MOT) is a key visual attention skill.
  • MOT performance is influenced by factors like speed, distractors, and proximity.
  • Recent research indicates object trajectories may also affect MOT.

Purpose of the Study:

  • To investigate the impact of unexpected changes in target trajectories on MOT performance.
  • To determine if spatial proximity or trajectory changes are more critical for MOT.

Main Methods:

  • Controlled experiments manipulating the number of trajectory changes in objects.
  • Controlled for spatial proximity to isolate the effect of trajectory alterations.
  • Measured tracking accuracy as a function of these manipulations.

Main Results:

  • Spatial proximity did not significantly affect MOT performance.
  • Increased instances of trajectory changes led to a decline in tracking accuracy.
  • Performance degraded as the frequency of unexpected direction changes rose.

Conclusions:

  • Unexpected changes in object trajectories significantly impair multiple-object tracking.
  • MOT ability is primarily limited by unpredictable alterations in target direction, not spatial proximity.