An electroencephalographic fingerprint of human sleep
Abstract
Homeostatic and circadian processes are basic mechanisms of human sleep which challenge the common knowledge of large individual variations in sleep need or differences in circadian types. However, since sleep research has mostly focused on group measures, an approach which emphasizes the similarities between subjects, the biological foundations of the individual differences in normal sleep are still poorly understood. In the present work, we assessed individual differences in a range of EEG frequencies including sigma activity during non-REM sleep (8.0-15.5 Hz range) in a group of 10 subjects who had participated in a slow-wave sleep (SWS) deprivation study. We showed that, like a "fingerprint", a particular topographic distribution of the electroencephalogram (EEG) power along the antero-posterior cortical axis distinguishes each individual during non-REM sleep. This individual EEG-trait is substantially invariant across six consecutive nights characterized by large experimentally induced changes of sleep architecture. One possible hypothesis is that these EEG invariances can be related to individual differences in genetically determined functional brain anatomy, rather than to sleep-dependent mechanisms.
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Alpha activity is one of the EEG bands most influenced by interindividual differences.
“It should be underlined that the alpha activity is one of the EEG bands most influenced by interindividual differences (De Gennaro et al., 2005) and this seems crucial when the experiment included between-subjects measures (Takeuchi et al., 2003; Esposito et al., 2004; Marzano et al., 2011).”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as De Gennaro et al., 2005
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- Authors
- De Gennaro, L., Ferrara, M., Vecchio, F., Curcio, G., & Bertini, M.
- Affiliations
- Fatebenefratelli Hospital (IT)
- Sapienza University of Rome (IT)
- Venue
- NeuroImage
- Publisher
- Elsevier BV
- Published
- 2005-05
- Volume
- 26
- Issue
- 1
- Pages
- 114-122
- ISSN
- 1053-8119 (ISSN-L)
- OpenAlex
- W1986409253
- Cited by
- 247
- References
- 67
- Citations by year
- 2026: 7 · 2025: 14 · 2024: 10 · 2023: 10 · 2022: 15 · 2021: 11 · 2020: 15 · 2019: 26 · 2018: 12 · 2017: 16 · 2016: 14 · 2015: 12 · 2014: 11 · 2013: 12 · 2012: 11
- FWCI
- 4.61
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- NeuroImage (publishedVersion)
- PubMed (publishedVersion)
- IRIS eCampus Telematic University (Università degli Studi eCampus) (submittedVersion)
- IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
- Archivio Istituzionale della Ricerca - Università degli Studi dell Aquila (submittedVersion)
- Funders
- Ministero dell’Istruzione, dell’Università e della Ricerca
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- individual differences in sleep, NREM sleep, slow-wave sleep, sleep deprivation, sleep homeostasis, circadian rhythm, sleep architecture
- MeSH terms
- Adult, Electroencephalography, Humans, Individuality, Male, Sleep, Polysomnography
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