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Literature DB >> 30851987

The High Energy Cost of Theta-Gamma Activity during REM Sleep.

Abstract

The occurrence of wake-like electroencephalography (EEG) traces during rapid-eye movement sleep (REM) has intrigued scientists for decades. A recent study by Bergel et al. (Nat. Commun. 2018;9;5364) imaged brain-wide hemodynamics in rats during wakefulness and sleep. The findings suggest that brain energy expenditure is highest during REM because of heightened theta and gamma activity.

Entities: Disease Gene Species

Keywords: gamma; hippocampus; neurovascular coupling; oscillations; theta

Mesh：

Year: 2019 PMID： 30851987 PMCID： PMC7722518 DOI： 10.1016/j.tins.2019.02.004

Source DB: PubMed Journal: Trends Neurosci ISSN： 0166-2236 Impact factor: 13.837

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The High Energy Cost of Theta-Gamma Activity during REM Sleep.

1. Temporally structured replay of awake hippocampal ensemble activity during rapid eye movement sleep.

2. Hemodynamic signals correlate tightly with synchronized gamma oscillations.

3. Functional neuroanatomy of human rapid-eye-movement sleep and dreaming.

4. Frequency of gamma oscillations routes flow of information in the hippocampus.

5. Brain perfusion during rapid-eye-movement sleep successfully identifies amnestic mild cognitive impairment.

Review 6. Neuronal networks and mediators of cortical neurovascular coupling responses in normal and altered brain states.

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