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Related Experiment Video

Updated: Dec 2, 2025

Irrelevant Stimuli and Action Control: Analyzing the Influence of Ignored Stimuli via the Distractor-Response Binding Paradigm

Irrelevant Stimuli and Action Control: Analyzing the Influence of Ignored Stimuli via the Distractor-Response Binding Paradigm

Published on: May 14, 2014

Distractor probabilities modulate flanker task performance.

Eli Bulger¹, Barbara G Shinn-Cunningham¹, Abigail L Noyce^2,3

¹Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA.

Attention, Perception & Psychophysics

|November 2, 2020

Summary

This summary is machine-generated.

Humans use expectations to suppress distractors, showing sensitivity to flanker probabilities in the Eriksen flanker task. This attentional control is strongest with similar stimuli and quick responses.

Keywords:

Attention and executive control Attention: Selective Expectation

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Last Updated: Dec 2, 2025

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Published on: May 14, 2014

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Area of Science:

Cognitive Psychology
Neuroscience
Human Attention Studies

Background:

Expectations aid in filtering distractors and enhancing responses to relevant information.
The role of expectations in actively suppressing specific distractors remains less understood.

Purpose of the Study:

To investigate how expectations influence the suppression of specific distractors.
To examine the relationship between distractor probability and attentional performance.

Main Methods:

Manipulation of flanker configuration probabilities within the Eriksen flanker task.
Utilized chevron and letter stimuli across four studies to test generalization.
Varied stimulus similarity and response speed to assess factors influencing expectation effects.

Main Results:

Demonstrated robust sensitivity to flanker probabilities, with a logarithmic relationship between likelihood and accuracy.
Subjects showed sensitivity to target run lengths but minimal sensitivity to flanker run lengths.
Stimulus dissimilarity and expanded stimulus sets reduced the impact of expectations on distractor suppression.

Conclusions:

Expectations regarding distractors are formed based on statistical regularities across different timescales.
The effectiveness of distractor suppression via expectations is maximized with geometrically similar stimuli and rapid responses.
Unexpected distractors can impair performance through attentional capture, highlighting the dynamic nature of attentional control.