ArticleFrontiers in physiology2018
Circadian Rhythms in Fractal Features of EEG Signals.
Article in Frontiers in physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed.
- A time-scale representation of EEG Higuchi fractal dimension.Scientific reports · 2026Article
- Redefinition of EEG frequency bands: a fractal model inspired by Blagg's Titius-Bode law.Frontiers in systems neuroscience · 2026Article
- Chronotype-specific associations of sleep-wake schedule with behavioral, physiological, and psychological parameters.Sleep advances : a journal of the Sleep Research Society · 2026Article
- Ephaptic coupling and power fluctuations in depression.bioRxiv : the preprint server for biology · 2025Article
- Multi-dimensional feature extraction of EEG signal and its application in stroke classification.Scientific reports · 2025Article
- Aperiodic EEG signatures: unveiling the interplay between APOE ε4 and mild cognitive impairment subtypes.Frontiers in aging neuroscience · 2025Article
- Sex- and Substance-Specific Associations of Circadian-Related Genes with Addiction in the UK Biobank Cohort Implicate Neuroplasticity Pathways.Brain sciences · 2024Article
- Diminished circadian and ultradian rhythms of human brain activity in pathological tissue in vivo.Nature communications · 2024Article
- Clinical Sensitivity of Fractal Neurodynamics.Advances in neurobiology · 2024Article
- Fractal Neurodynamics.Advances in neurobiology · 2024Article
- Mindfulness meditation styles differently modulate source-level MEG microstate dynamics and complexity.Frontiers in neuroscience · 2024Article
- Driving drowsiness detection using spectral signatures of EEG-based neurophysiology.Frontiers in physiology · 2023Article
- Analysis of circadian rhythm components in EEG/EMG data of aged mice.Frontiers in neuroscience · 2023Article
- Region-specific complexity of the intracranial EEG in the sleeping human brain.Scientific reports · 2022Article
- Alpha3/alpha2 power ratios relate to performance on a virtual reality shopping task in ageing adults.Frontiers in aging neuroscience · 2022Article
- Chronotype, circadian rhythm, and psychiatric disorders: Recent evidence and potential mechanisms.Frontiers in neuroscience · 2022Review
- Time in Brain: How Biological Rhythms Impact on EEG Signals and on EEG-Derived Brain Networks.Frontiers in network physiology · 2021Article
- Neuro-Cognitive Profile of Morning and Evening Chronotypes at Different Times of Day.Annals of neurosciences · 2020Article
- Transition of Neural Activity From the Chaotic Bipolar-Disorder State to the Periodic Healthy State Using External Feedback Signals.Frontiers in computational neuroscience · 2020Article
- To Be Is To Become. Fractal Neurodynamics of the Body-Brain Control System.Frontiers in physiology · 2020Article
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4 authors.
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Abstract
Time-of-day modulations affect both performance on a wide range of cognitive tasks and electrical activity of the brain, as recorded by electroencephalography (EEG). The aim of this work was to identify fluctuations of fractal properties of EEG time series due to circadian rhythms. In twenty-one healthy volunteers (all males, age between 20 and 30 years, chronotype: neutral type) high density EEG recordings at rest in open and closed eyes conditions were acquired in 4 times of the day (8.00 a.m., 11.30 a.m., 2.30 p.m., 7.00 p.m.). A vigilance task (Psychomotor Vigilance Test, PVT) was also performed. Detrended fluctuation Analysis (DFA) of envelope of alpha, beta and theta rhythms was performed, as well as Highuchi fractal dimension (HFD) of the whole band EEG. Our results evidenced circadian fluctuations of fractal features of EEG at rest in both eyes closed and eyes open conditions. Lower values of DFA exponent were found in the time T1 in closed eyes condition, likely effect of the sleep inertia. An alpha DFA exponent reduction was found also in central sensory-motor areas at time T3, the day time in which the sleepiness can be present. In eyes open condition, HFD lowered during the day. In eyes closed condition, an HFD increase was observed in central and frontal regions at time T2, the time in which alertness reaches its maximum and homeostatic sleep pressure is low. Complexity and the persistence of temporal correlations of brain rhythms change during daytime, parallel to changes in alertness and performance.
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