Related Experiment Video
Updated: Jul 11, 2026
13:00
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Searching for two feature singletons in the visual scene: the localized attentional interference effect
Ping Wei1, Jianguo Lü, Hermann J Müller
1Department of Psychology, Peking University, Beijing 100871, China.
Experimental Brain Research
|October 9, 2007
Summary
Nearby items interfere with visual attention, slowing reaction times, especially when features are close together. This localized attentional interference effect is more pronounced for targets in different dimensions.
Area of Science:
- Cognitive Psychology
- Visual Perception
- Human Attention
Background:
- The localized attentional interference (LAI) effect describes how nearby visual stimuli can impede attentional selection.
- Understanding LAI is crucial for explaining how attention is allocated in complex visual environments.
Purpose of the Study:
- To investigate the localized attentional interference effect in a visual search task.
- To examine how spatial proximity and feature dimensions of targets influence attentional interference.
Main Methods:
- Participants performed visual search tasks monitoring two spatially separated features.
- Experiments manipulated feature proximity (CLOSE vs. DISTANT) and feature dimensions (same vs. different).
- Reaction times (RTs) and search set size were recorded to measure interference.
Main Results:
- Reaction times were slower for CLOSE features compared to DISTANT features.
- RTs for CLOSE stimuli increased with set size, while DISTANT stimuli were unaffected.
- Greater interference was observed for cross-dimension targets that were CLOSE.
Conclusions:
- Neighboring items, regardless of dimension, interfere with attentional selection.
- Searching for two cross-dimension targets may require dimension switching, particularly when items are close.
- Spatial proximity is a key factor in localized attentional interference.
