One fundamental feature of consciousness is that the contents depend on state consciousness. Here, we propose an answer to why this so: both and activity cortical layer 5 pyramidal (L5p) neurons. These neurons affect thalamic processing, hence coupling cortico-cortical thalamo-cortical loops with each other. Functionally corresponds between Together form a broadcasting system, where L5p cells are central elements. This perspective makes one quite specific prediction: processing does not...

Constructive theories of brain function such as predictive coding posit that prior knowledge affects our experience the world quickly and directly. However, it is yet unknown how swiftly impacts neural processes giving rise to conscious experience. Here we used an experimental paradigm where augmented perception measured timing this effect with magnetoencephalography (MEG). By correlating perceptual benefits MEG activity, found took in time-window 80-95 ms after stimulus onset, thus...

Previous studies have observed different onset times for the neural markers of conscious perception. This variability could be attributed to procedural differences between studies. Here we show that visual perception can strongly vary even within a single study. A heterogeneous stimulus set was presented at threshold contrast. Trials with and without were contrasted on 100 balanced subsets data. Importantly, stimuli did not differ in content, but only regard specific trials used. approach...

Abstract Mismatch negativity (MMN) and P3b are well known for their clinical utility. There exists no gold standard, however, acquiring them as EEG markers of consciousness in settings. This may explain why the within‐individual sensitivity MMN/P3b paradigms is often quite poor seemingly identical can behave differently across Disorders (DoC) studies. Here, we compare two traditional MMN or assessment with recently more popular local–global paradigm that promises to assess orthogonally...

Metacognition involves second-order judgments about first-order ones. It remains unclear whether an individual's confidence in being correct is generated by the same system across tasks (domain-generality) or it computed independently context of each task (domain-specificity). Previous studies have focused on correlations several tasks, yet evidence mixed and more complex models domain-generality were not taken into account. Analyzing data from 10 collected three (N between 253 547...

It is a topic of scientific debate whether early visual cortex (V1) essential for creating working memory (vWM) representations. The current study aimed to replicate and expand previous research regarding the role structural properties V1 in vWM retention. Structural V1, particularly field inhomogeneities (including polar angle asymmetries), were investigated link interindividual differences performance differences. 292 participants underwent MRI scan with multiparametric mapping sequence,...

Dreaming represents a complex and universal aspect of human sleep, yet it remains an intriguing phenomenon, with the neural mechanisms underlying dream experiences their frequency not fully understood. This study employs multimodal neuroimaging approach, integrating quantitative multi-parameter mapping, diffusion tensor imaging, resting-state functional MRI, to investigate correlates recall (DRF) in large cohort 258 healthy individuals. By employing Linked Independent Component Analysis...

Variations in mental imagery ability has been linked to various emotional, cognitive and personality measures. However, a comprehensive theoretical framework is missing account for these associations their link health. Here, we present evidence model of centered around putative "inwardly focused" style, which integrates range traits associated with visual imagery. By examining the association between self-reported vividness diverse array questionnaire measures, demonstrate that significantly...

Abstract The present study investigated individual differences in how much subjects rely on prior information, such as expectations or knowledge, when faced with perceptual ambiguity. behavioural performance of forty-four participants was measured four different visual paradigms (Mooney face recognition, illusory contours, blur detection and representational momentum) which priors have been shown to affect perception. In addition, questionnaires were used measure autistic schizotypal traits...

Brain responses evoked by transcranial magnetic stimulation (TMS) in task-free experimental contexts are known to depend on psychophysiological states such as sleep, vegetative state and caffeine-induced arousal. Much less is about how TMS-evoked task-irrelevant steady perceptual input. Here, we examined ongoing alpha activity the mean amplitude of EEG potentials response occipitally applied TMS a function visual backgrounds. Responses were robustly modulated photographs natural scenes...

Abstract Michel (The mismeasure of consciousness: a problem coordination for the perceptual awareness scale. Philos Sci 2019;86:1239–49) claims that Perceptual Awareness Scale (PAS) faces (also known as validity). We argue his claim holds only under certain theoretical assumptions which need to be made explicit these are likely not in line with PAS proponents’ standpoint. also call terminological clarity, an example being usage ‘levels’ consciousness. Precise terminology combined reference...

Metacognition involves second-order judgments about first-order ones. It remains unclear whether an individual's confidence in being correct is generated by the same system across tasks (domain-generality) or it computed independently context of each task (domain-specificity). Previous studies have focused on correlations several tasks, yet evidence mixed and more complex models domain-generality were not taken into account. Analyzing data from 10 collected three (N between 253 547...

Abstract Study Objectives Nightmares are linked to daytime distress and psychiatric neurological disorders. However, knowledge about the brain regions involved in nightmare production is sparse. This study aimed examine relationship between frequency functional connectivity of amygdala with prefrontal cortex, which central emotional regulation. Additionally, sought replicate previous findings on neural correlates nightmares using two large cohorts. Methods 464 participants underwent...

A growing body of evidence indicates that spontaneous, moment-to-moment fluctuations the EEG alpha activity (7-15 Hz) affect perception, with a lower amplitude oscillations right before stimulus onset facilitating its detection and visibility. The present study aimed to determine whether alpha-band predicts perception also at inter-individual level, namely participants overall weaker resting-state perform better in stimuli identification tasks. To this end, we used data collected from 302...

Variations in mental imagery ability has been linked to various emotional, cognitive and personality measures. However, a comprehensive theoretical framework is missing account for these associations their link health. Here, we present evidence model of centered around putative "inwardly focused" style, which integrates range traits associated with visual imagery. By examining the association between self-reported vividness diverse array questionnaire measures, demonstrate that significantly...

Metacognition involves second-order judgments about first-order ones. It remains unclear whether an individual's confidence in being correct is generated by the same system across tasks (domain-generality) or it computed independently context of each task (domain-specificity). Previous studies have focused on correlations several tasks, yet evidence mixed and more complex models domain-generality were not taken into account. Analyzing data from 10 collected three (N between 253 547...

Abstract The goal of the present investigation was to identify reliable markers conscious visual perception and characterize their onset latency its variability. To that end many stimuli from different categories were presented at near-threshold contrast contrastive analyses carried out on 100 balanced subsets data. N200 P300 two common all perceived absent for non-perceived stimuli. estimated mean both shortly after 200 ms. However, these showed considerable variability depending which data...