How Does Mind-Wandering Affect Distractor Suppression?

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Attention Research

Background:

• Overt attention suppression is crucial for effective visual search.
• Attentional resources are thought to be limited and necessary for cognitive control.
• The role of attentional resources in inhibiting salient distractors remains debated.

Purpose of the Study:

• To investigate whether suppressing overt attention to a salient distractor requires attentional resources.
• To examine the influence of mind-wandering on distractor interference during visual search.
• To determine if initial eye movements accurately reflect distractor interference.

Main Methods:

• Participants performed a feature-search task, searching for a target shape amidst varying distractors.
• Thought probes assessed mind-wandering, and pupil size measured attentional resource fluctuations.
• Eye movements were tracked to analyze initial fixations and search patterns.

Main Results:

• Suppression of initial eye movements towards the distractor occurred irrespective of attentional resource availability.
• Mind-wandering led to increased target looking time in the presence of a distractor.
• Initial overt attention deployment appeared automatic, not resource-dependent, but distractors could impede later processing.

Conclusions:

• Initial overt attention to salient distractors in feature search may be automatic, driven by selection history.
• Distractor interference can affect later visual processing stages, especially during mind-wandering.
• Eye movements alone do not fully capture the extent of distractor interference throughout visual search.