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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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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
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Subliminal access to abstract face representations does not rely on attention.

Bronson Harry1, Chris Davis, Jeesun Kim

  • 1Bankstown Campus, Building 1, MARCS Auditory Laboratories, University of Western Sydney, Locked Bag 1797, Penrith NSW 2751, Australia. b.harry@uws.edu.au

Consciousness and Cognition
|December 28, 2011
PubMed
Summary

Subliminal access to abstract face representations occurs without attention. This study shows that masked repetition priming reveals unconscious face recognition, even when attention is not directed.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Attention is crucial for conscious perception.
  • The extent to which unconscious processing influences face recognition remains debated.
  • Masked priming paradigms are used to investigate subliminal perception.

Purpose of the Study:

  • To investigate if abstract face representations can be accessed without conscious attention.
  • To differentiate between view-specific and view-invariant face representations under conditions of inattention.
  • To determine the role of attention in subliminal face processing.

Main Methods:

  • Two experiments employed a masked repetition priming paradigm.
  • Participants performed a face recognition task (fame judgment).
  • Masked primes (same or different images of the same individual) were presented in spatially unattended locations before target faces.

Main Results:

  • Repetition priming effects were observed regardless of attentional cueing.
  • Experiment 1 showed priming for both famous and non-famous faces, suggesting view-specific access.
  • Experiment 2 demonstrated reliable priming only for famous faces, indicating view-invariant, abstract representation access.

Conclusions:

  • Subliminal access to abstract face representations does not require attention.
  • Unattended faces can be processed to a level that supports recognition of abstract identity.
  • These findings challenge attention-based models of face perception.