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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Challenges for theories of consciousness: seeing or knowing, the missing ingredient and how to deal with panpsychism
TL;DR: New challenges have surfaced in the study of consciousness and many theories of consciousness seem to endorse high degrees of panpsychism—the notion that all beings or even lifeless objects have conscious experience.
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Hard criteria for empirical theories of consciousness.
TL;DR: It is argued that consciousness is a well-defined topic from an empirical point of view and motivate a purely empirical stance on the quest for consciousness, and a checklist of criteria is presented that empirical ToCs need to cope with.
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Musical Expertise and Statistical Learning of Musical and Linguistic Structures
Daniele Schön,Clément François +1 more
TL;DR: The results show that segmentation is better after exposure to sung compared to spoken material and moreover, that linguistic structure is better learned than the musical structure when using sung material.
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Desflurane Selectively Suppresses Long-latency Cortical Neuronal Response to Flash in the Rat
TL;DR: The results indicate that visual cortex neurons remain responsive to flash stimulation under desflurane anesthesia, but the long-latency component of their response is attenuated in a concentration-dependent manner.
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Rapid brain responses independently predict gain-maximization and loss-minimization during economic decision-making
René San Martín,René San Martín,Lawrence G. Appelbaum,John M. Pearson,Scott A. Huettel,Marty G. Woldorff +5 more
TL;DR: It is shown that individuals' behavioral tendencies to maximize gains and to minimize losses are associated with their ERP responses to the receipt of those gains and losses, respectively, andindividual differences in gain maximization and loss minimization are linked to individual differences in rapid neural responses to monetary outcomes.
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.