0092 INFORMATION PROCESSING DURING SLEEP AND SLEEP MISPERCEPTION IN INSOMNIA: AN ERP STUDY.
Bibliographic record
Abstract
Hyperarousal is linked to sleep misperception, which is especially present in paradoxical insomnia (PARA-I). ERP studies showed that hyperarousal can be expressed through enhanced information processing, which is different between PARA-I and psychophysiological insomnia (PSY-I). Our objective is to use ERPs to investigate the link between misperception and information processing. Specifically, N1 (vigilance) and P2 (inhibition) were chosen for information processing and sleep onset latency (SOL) and wake after sleep onset (WASO) were used for misperception. Our hypothesis is that the link between misperception and information processing will be stronger for PARA-I than for PSY-I and good sleepers (GS). 50 GS (age 34.7 ± 9.0), 40 PSY-I (40.9 ± 9.1) and 29 PARA-I (39.41 ± 9.2) underwent four PSG nights. Subjective and objective sleep measures were obtained for SOL and WASO. ERPs were recorded all night on Night 4 (oddball paradigm). A linear mixed model including 3 within-subject factors (peak, N1 and P2; auditory stimuli, standard and deviant; recording time, S2E, S2L, SWS, REM), 3 between-subject independent factors (group, GS, PARA-I, PSY-I; SOL and WASO misperception, over, good, under) was computed on amplitude data at Cz. Misperception was calculated as the difference between subjective and objective measures. Results revealed no differences between groups for information processing (p = 0.451). However, the interaction effect group x peak, (p=0.004), showed that P2 was higher in PARA-I. There was no moderator effect of group on the link between misperception and hyperarousal (p=0.769, p=0.440). A higher P2 in PARA-I would indicate that they need to deploy more energy to inhibit information processing, which would explain their greater misperception. Knowing that hyperarousal is a 24-hour problem, daytime ERPs should be investigated in connexion with sleep misperception. No group moderation effect means that the link between misperception and hyperarousal stays stable across sleep types. Consequently, mechanisms linking sleep misperception and hyperarousal appear similar for each group. -
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".