Neural Signatures of Conscious Experience During Sleep: A Serial Awakening Study Using High-Density EEG
Selte, A.; Haworth, S. E.; Vannasse, T. J.; Alauddin, T.; Gjini, K.; Philibert-Rosas, S.; Brace, C.; Sevak, B.; Riedner, B.; Kalkach-Aparicio, M.; Tononi, G.; Boly, M.; Struck, A. F.
Show abstract
Identifying neural signatures of consciousness remains a central challenge in neuroscience. Sleep offers a tractable model for comparing brain activity in the presence or absence of subjective experience while minimizing behavioral responsiveness confounds. Using overnight 256 electrode high-density EEG in 140 participants and a serial-awakening paradigm, we analyzed 699 non-rapid eye movement (NREM) sleep stage 2 and 3 awakenings (351 dreaming experience, 348 no experience). Features from the 60s preceding awakening included regional spectral power, lagged-coherence connectivity, graph-theoretic metrics and gamma-to-alpha power ratios. Dreaming experiences were associated with shifts in posterior spectral balance, particularly reduced alpha and delta power and increased gamma-related measures, together with altered large scale network organization. In participant-level cross-validated machine-learning analyses, all classifiers performed above chance, with the best ensemble model reaching an ROC-AUC of 0.80 and average precision of 0.80. These findings identify reproducible posterior electrophysiological and network-level signatures of conscious states during NREM sleep.
Matching journals
The top 6 journals account for 50% of the predicted probability mass.
Similar papers in this journal
Similar papers in this journal
- Multi-channel recordings reveal age-related differences in the sleep of juvenile and adult zebra finches 95%
- Infraslow modulation of theta synchrony in the hippocampus circuit during REM sleep 95%
- Delta-range coupling between prefrontal cortex and hippocampus supported by respiratory rhythmic input from the olfactory bulb in freely behaving rats 95%
Similar papers in this journal
- The Dream Catcher experiment: Blinded analyses disconfirm markers of dreaming consciousness in EEG spectral power 95%
- Emergence of consciousness and complexity amidst diffuse delta rhythms: the paradox of Angelman syndrome 95%
- Functional connectivity drifts during sleep as a marker of fluctuations in the level of consciousness 94%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.