Cited by 835Visual perception and processing mechanismsPhilosophy and Theoretical ScienceNeural and Behavioral Psychology Studies

Levels of processing during non-conscious perception: a critical review of visual masking

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Kouider, Sid, Dehaene, Stanislas·2007·Philosophical Transactions of the Royal Society B: Biological Sciences

Abstract

Understanding the extent and limits of non-conscious processing is an important step on the road to a thorough understanding of the cognitive and cerebral correlates of conscious perception. In this article, we present a critical review of research on subliminal perception during masking and other related experimental conditions. Although initially controversial, the possibility that a broad variety of processes can be activated by a non-reportable stimulus is now well established. Behavioural findings of subliminal priming indicate that a masked word or digit can have an influence on perceptual, lexical and semantic levels, while neuroimaging directly visualizes the brain activation that it evokes in several cortical areas. This activation is often attenuated under subliminal presentation conditions compared to consciously reportable conditions, but there are sufficiently many exceptions, in paradigms such as the attentional blink, to indicate that high activation, per se , is not a sufficient condition for conscious access to occur. We conclude by arguing that for a stimulus to reach consciousness, two factors are jointly needed: (i) the input stimulus must have enough strength (which can be prevented by masking) and (ii) it must receive top-down attention (which can be prevented by drawing attention to another stimulus or task). This view leads to a distinction between two types of non-conscious processes, which we call subliminal and preconscious. According to us, maintaining this distinction is essential in order to make sense of the growing neuroimaging data on the neural correlates of consciousness.

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Crossref · 10.1098/rstb.2007.2093

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Authors
Kouider, S., & Dehaene, S.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Inserm (FR)
Corresponding author
Kouider, Sid
Venue
Philosophical Transactions of the Royal Society B: Biological Sciences
Published
2007-04-02
Volume
362
Issue
1481
Pages
857-875
ISSN
  • 0962-8436 (ISSN-L)
  • 1471-2970
OpenAlex
W2165768077
Cited by
835
References
193
Citations by year
2026: 27 · 2025: 33 · 2024: 39 · 2023: 65 · 2022: 31 · 2021: 37 · 2020: 45 · 2019: 73 · 2018: 59 · 2017: 40 · 2016: 28 · 2015: 55 · 2014: 65 · 2013: 51 · 2012: 49
FWCI
15.32
Type
journal article
Language
en
Open access
Locations
  • Philosophical Transactions of the Royal Society B Biological Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Philosophy and Theoretical Science
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
visual masking, subliminal perception, levels of processing, subliminal priming, attentional blink, top-down attention, neural correlates of consciousness, conscious access
MeSH terms
Attention, Brain, Consciousness, Humans, Neuropsychology, Perception, Perceptual Masking, Semantics, Unconscious, Psychology

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