Journal ArticleDOI
Timing of the brain events underlying access to consciousness during the attentional blink
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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.Abstract:
In the phenomenon of attentional blink, identical visual stimuli are sometimes fully perceived and sometimes not detected at all. This phenomenon thus provides an optimal situation to study the fate of stimuli not consciously perceived and the differences between conscious and nonconscious processing. We correlated behavioral visibility ratings and recordings of event-related potentials to study the temporal dynamics of access to consciousness. Intact early potentials (P1 and N1) were evoked by unseen words, suggesting that these brain events are not the primary correlates of conscious perception. However, we observed a rapid divergence around 270 ms, after which several brain events were evoked solely by seen words. Thus, we suggest 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.read more
Citations
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Synchronization of Neural Activity across Cortical Areas Correlates with Conscious Perception
TL;DR: It is proposed that the critical process mediating the access to conscious perception is the early transient global increase of phase synchrony of oscillatory activity in the gamma frequency range.
Journal ArticleDOI
Neural signature of the conscious processing of auditory regularities
Tristan A. Bekinschtein,Stanislas Dehaene,Stanislas Dehaene,Benjamin Rohaut,François Tadel,Laurent D. Cohen,Laurent D. Cohen,Lionel Naccache,Lionel Naccache +8 more
TL;DR: An auditory paradigm that evaluates cerebral responses to violations of temporal regularities that are either local in time or global across several seconds suggests that the presence of the global effect is a signature of conscious processing, although it can be absent in conscious subjects who are not aware of theglobal auditory regularities.
Journal ArticleDOI
The attentional blink: A review of data and theory
Paul E. Dux,René Marois +1 more
TL;DR: It is concluded that the attentional blink arises from attentional demands of Tl for selection, working memory encoding, episodic registration, and response selection, which prevents this high-level central resource from being applied to T2 at shortT1-T2 lags.
Journal ArticleDOI
The Neural Correlates of Consciousness An Update
Giulio Tononi,Christof Koch +1 more
TL;DR: This review examines recent advances in the study of brain correlates of consciousness and discusses dynamic aspects of neural activity, such as sustained versus phasic activity, feedforward versus reentrant activity, and the role of neural synchronization.
Journal ArticleDOI
Selective visual attention to emotion.
Harald T. Schupp,Jessica Stockburger,Maurizio Codispoti,Markus Junghöfer,Almut I. Weike,Alfons O. Hamm +5 more
TL;DR: Emotion potentiated attention effects specifically during later stages of processing, suggesting to specify the interaction of attention and emotion in distinct processing stages.
References
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Book
A cognitive theory of consciousness
TL;DR: In this article, the basic model of conscious representations are internally consistent and globally distributed, and the neural basis of conscious experience is explained, including the fundamental role of context, goal contexts, spontaneous problem solving and the stream of consciousness.
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Temporary suppression of visual processing in an RSVP task: an attentional blink? .
TL;DR: The authors found that the presentation of stimuli after the target but before target-identification processes are complete produces interference at a letter recognition stage, which may cause the temporary suppression of visual attention mechanisms observed in the present study.
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Electromagnetic brain mapping
TL;DR: The underlying models currently used in MEG/EEG source estimation are described and the various signal processing steps required to compute these sources are described.
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Reference-free identification of components of checkerboard-evoked multichannel potential fields
TL;DR: A method is proposed to determine components of evoked scalp potentials, in terms of times of occurrence (latency) and location on the scalp (topography), suggesting a stable localization of the generating process in depth.
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A two-stage model for multiple target detection in rapid serial visual presentation.
Marvin M. Chun,Mary C. Potter +1 more
TL;DR: Results of Experiments 3-5 confirmed that AB is triggered by local interference from immediate posttarget stimulation and showed thatAB is modulated by the discriminability between the 1st target and the immediately following distractor.