Conscious, preconscious, and subliminal processing: a testable taxonomy

@article{Dehaene2006ConsciousPA,
  title={Conscious, preconscious, and subliminal processing: a testable taxonomy},
  author={Stanislas Dehaene and Jean Pierre Changeux and Lionel Naccache and J{\'e}r{\^o}me Sackur and Claire Sergent},
  journal={Trends in Cognitive Sciences},
  year={2006},
  volume={10},
  pages={204-211}
}

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References

SHOWING 1-10 OF 63 REFERENCES
The neural correlates of conscious vision.
TLDR
The broad temporal and spatial distribution of activity argues against a unified, distributed fronto-parietal correlate of consciousness and suggests that correlates of consciousness are divided into primary and secondary network nodes, with early activity in the occipital lobe correlating with perception and later activity in downstream areas with secondary processes contingent on the outcome of earlier perceptual processing.
Neural correlates of consciousness in humans
TLDR
Functional neuroimaging in humans and electrophysiology in awake mokeys indicate that there are important differences between striate and extrastriate visual cortex in how well neural activity correlates with consciousness.
Timing of the brain events underlying access to consciousness during the attentional blink
TLDR
It is suggested that the transition toward access to consciousness relates to the optional triggering of a late wave of activation that spreads through a distributed network of cortical association areas.
Imaging unconscious semantic priming
TLDR
The results indicate that masked stimuli have a measurable influence on electrical and haemodynamic measures of brain activity and a stream of perceptual, semantic and motor processes can occur without awareness.
Capacity limits of information processing in the brain
Cerebral mechanisms of word masking and unconscious repetition priming
TLDR
Within the areas associated with conscious reading, masked words activated left extrastriate, fusiform and precentral areas and reduced the amount of activation evoked by a subsequent conscious presentation of the same word.
Electrophysiological evidence for a postperceptual locus of suppression during the attentional blink.
TLDR
Results indicate that the attentional blink reflects an impairment in a postperceptual stage of processing.
Early Neural Correlates of Conscious Somatosensory Perception
TLDR
The results show that the neural correlates of conscious perception are already found during the earliest stages of cortical processing from 30 to 150 ms after stimulus onset and suggest that α-frequency-band oscillations have a role in the neural mechanisms of sensory awareness.
...
1
2
3
4
5
...