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Related Concept Videos

Subliminal Perception01:15

Subliminal Perception

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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Updated: Jul 27, 2025

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Subliminal attentional bias modification training for itch.

Jennifer M Becker1, Dimitri M L Van Ryckeghem2,3,4, Stefaan Van Damme2

  • 1Health, Medical and Neuropsychology, Faculty of Social and Behavioural Science, Institute of Psychology, Leiden University, Leiden, Netherlands.

Frontiers in Medicine
|June 5, 2023
PubMed
Summary
This summary is machine-generated.

This study found no attentional bias towards itch after subliminal training. Instead, a bias away from itch (avoidance) emerged in the control group, not the trained groups, suggesting current methods may need reevaluation.

Keywords:
attentioncognitive biasexperimental psychologyitchprurituspsychodermatologyunconscious processing

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Area of Science:

  • Psychology
  • Neuroscience
  • Dermatology

Background:

  • Itch is an unpleasant sensation that prompts scratching, a protective reflex.
  • Attentional bias (AB) towards itch stimuli is studied, but findings are mixed.
  • Previous research often overlooks preconscious attentional processing of itch.

Purpose of the Study:

  • To investigate subliminal attentional bias modification (ABM) training for itch in healthy individuals.
  • To assess if ABM training can alter attentional bias towards or away from itch stimuli.
  • To examine the effects of ABM on itch sensitivity and related cognitions.

Main Methods:

  • 117 healthy participants received subliminal ABM training using a dot-probe task with itch-related images.
  • Participants were randomized into groups: training towards itch, away from itch, or control.
  • Pre- and post-training assessments included dot-probe tasks, attentional inhibition, cognitive flexibility, and itch sensitivity tests.

Main Results:

  • No baseline attentional bias towards itch was observed.
  • Post-training, an attentional bias away from itch (avoidance) was found, primarily in the control group.
  • No significant training effects on attentional bias were observed in the experimental groups, nor on itch sensitivity.

Conclusions:

  • Current subliminal ABM training did not induce a bias towards itch.
  • The observed avoidance bias in the control group suggests current ABM assessment methods may require reconsideration.
  • Attentional bias is dynamic and context-dependent, potentially differing in chronic itch patients and impacting ABM efficacy.