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Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

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No attentional capture from invisible flicker.

David Alais¹, Shannon M Locke², Johahn Leung¹

¹School of Psychology, University of Sydney, New South Wales, 2006 Australia.

Scientific Reports

|July 6, 2016

Summary

Visible flicker, but not imperceptible flicker, effectively captures visual attention. Frequencies between 20-48 Hz improved search performance, while higher rates did not.

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Last Updated: Mar 18, 2026

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Published on: December 5, 2014

Area of Science:

Visual perception
Cognitive psychology
Neuroscience

Background:

Attention is crucial for processing visual information.
Exogenous cues, like sudden visual onsets, can involuntarily capture attention.
The effectiveness of rapid visual flicker as an attentional cue is not fully understood.

Purpose of the Study:

To investigate whether fast flicker, including imperceptible rates, can function as an exogenous attentional cue.
To determine the relationship between flicker detectability and its ability to guide attention.
To assess the impact of flicker duration on its attentional cueing efficacy.

Main Methods:

Eight flicker frequencies (20–96 Hz) were presented using a 480 Hz display.
Flicker detection rates were measured for each frequency.
A visual search task employed flicker as a pre-cue (58 ms and 1000 ms) to assess attentional guidance.

Main Results:

Flicker detection performance was high up to 48 Hz, dropping to chance levels at 60 Hz and above.
Visible flicker (20–48 Hz) significantly enhanced visual search when spatially congruent with the target.
Imperceptible flicker (≥60 Hz) did not produce a congruency effect, regardless of cue duration.

Conclusions:

Only perceptible flicker acts as an effective exogenous attentional cue.
Flicker rates exceeding perceptual thresholds fail to guide attention.
These findings clarify the limits of rapid visual stimuli in capturing attention.