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
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Posted ContentDOI
Subjective perceptual experience tracks the neural signature of sensory evidence accumulation during decision formation
Chiara F. Tagliabue,Domenica Veniero,Christopher S.Y. Benwell,Roberto Cecere,Silvia Savazzi,Gregor Thut +5 more
TL;DR: A remarkably close relationship exists between the evidence accumulation process (i.e. CPP) and subjective perceptual experience, suggesting that neural decision processes and components of conscious experience are tightly linked.
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Regulating the Access to Awareness: Brain Activity Related to Probe-related and Spontaneous Reversals in Binocular Rivalry
TL;DR: The data suggest that the P3B reflects an update in consciousness and that the intensity of that process (as indexed by P3b amplitude) predicts how immediate that update is.
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Access to consciousness of briefly presented visual events is modulated by transcranial direct current stimulation of left dorsolateral prefrontal cortex.
TL;DR: Findings support the notion that the DLPFC plays a role in facilitating information transition from the unconscious to the conscious stage of processing, by using transcranial direct current stimulation to potentiate or reduce neural excitability in the context of an AB task.
Dissertation
The neural substrates of non-conscious working memory
TL;DR: This work has shown that not only is it possible to be conscious of a fraction of all the neural activity underlying the authors' thoughts and behavior, but also how this activity affects their decision-making.
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Implicit processing during inattentional blindness: A systematic review and meta-analysis.
Alexandre de Pontes Nobre,Alexandre de Pontes Nobre,Gabriela Mueller de Melo,Gustavo Gauer,Johan Wagemans +4 more
TL;DR: Meta-analysis showed that visual stimuli can be processed when unattended and unnoticed, and the overall effect of awareness changed depending on whether more demanding or less demanding measures of awareness were employed, suggesting that the choice of awareness measure may influence conclusions about whether processing of the US is implicit or explicit.
References
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Book
A cognitive theory of consciousness
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Journal ArticleDOI
Temporary suppression of visual processing in an RSVP task: an attentional blink? .
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Journal ArticleDOI
Electromagnetic brain mapping
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Journal ArticleDOI
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.
Journal ArticleDOI
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.