A dream EEG and mentation database
Published in Nature Communications, 2025
Magneto/electroencephalography (M/EEG) studies of dreaming are an essential paradigm in the investigation of neurocognitive processes of human consciousness during sleep, but they are limited by the number of observations that can be collected per study. Dream research also involves substantial methodological and conceptual variability, which poses problems for the integration of results. To address these issues, this paper presents the DREAM database — an expanding collection of standardised datasets on human sleep M/EEG combined with dream report data — with an initial release comprising 20 datasets, 505 participants, and 2,643 awakenings. Each awakening consists, at minimum, of sleep M/EEG (≥20 s, ≥100 Hz, ≥2 electrodes) up to the time of waking and a standardised dream report classification of the subject’s experience during sleep. Reports of conscious experiences can be predicted with objective features extracted from EEG recordings in both REM and non-REM (NREM) sleep.
Contributions: Curated data (two datasets; see Aamodt et al. 2023 and 2021).
Recommended citation: Wong, W., ..., Nilsen, A. S., ..., & Tsuchiya, N. (2025). A dream EEG and mentation database. Nature Communications, 16(1).
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