Self-motion impairs multiple-object tracking.

Area of Science:

• Cognitive psychology
• Human perception
• Neuroscience

Background:

• Multiple-object tracking (MOT) is crucial for understanding real-world activities like driving.
• Laboratory MOT tasks often omit self-motion, a key element in naturalistic tracking scenarios.

Purpose of the Study:

• To investigate if self-motion interferes with the ability to track multiple moving objects.
• To determine if cognitive load associated with self-motion impairs visual tracking performance.

Main Methods:

• Participants performed MOT tasks in both stationary and self-motion conditions (active and passive movement).
• Experiments were conducted in both immersive virtual reality and a real-world setting.
• A non-spatial tracking task was used as a control to assess task specificity.

Main Results:

• Self-motion significantly impaired performance on the multiple-object tracking task.
• Performance decrements occurred even with passive self-motion and without visual viewpoint changes.
• Self-motion did not affect performance on a difficult non-spatial tracking task, indicating specificity.

Conclusions:

• Tracking one's own movement shares cognitive resources with tracking external objects.
• Self-motion poses a significant challenge to multiple-object tracking abilities.
• A common neural mechanism likely underlies spatial awareness and the tracking of dynamic external environments.