Waking and sleep data in adults show high heritability and trait-like characteristics in EEG spectra. This phenomenon has not been examined in children and adolescents where brain development influences the EEG. The present study examines whether a trait-like sleep EEG pattern is detectable across adolescent development. Two consecutive nights of standard sleep recordings were performed in 19 9...

STUDY OBJECTIVES To explore interactions between cerebral cortical and autonomic functions in different sleep-wake states. DESIGN Active waking (AW), quiet sleep (QS), and paradoxical sleep (PS) of adult male Wistar-Kyoto rats (WKY) on their daytime sleep were compared. PARTICIPANTS Ten WKY. INTERVENTIONS All rats had electrodes implanted for polygraphic recordings. One week later, a 6-ho...

The impact of sleep deprivation (high sleep pressure) vs sleep satiation (low sleep pressure) on waking EEG dynamics, subjective sleepiness and core body temperature (CBT) was investigated in 10 young volunteers in a 40 h controlled constant posture protocol. The differential sleep pressure induced frequency-specific changes in the waking EEG from 1-7 Hz and 21-25 Hz. Frontal low EEG activity (...

Exposure to early life stress may profoundly influence the developing brain in lasting ways. Neuropsychiatric disorders associated with early life adversity may involve neural changes reflected in EEG power as a measure of brain activity and disturbed sleep. The main aim of the present study was for the first time to characterize possible changes in adult EEG power after postnatal maternal sepa...

Recently, it was hypothesized that acute or cumulative suppression of non-REM sleep intensity might be related to the therapeutic effects of antidepressants. This intensity has been proposed to be expressed in the EEG power density in non-REM sleep. In the present study, the relationship was examined between the changes of EEG power density in non-REM sleep and the changes in clinical state in ...

1071 GABAB Agonist, Sleep, and the EEG—Vienne et al INTRODUCTION Sodium oxybate (SO, sodium salt of γ-hydroxybutyric acid [GHB]) is an endogenously produced fatty acid, recently approved for the treatment of narcolepsy with cataplexy.1 GHB has been shown to increase slow wave sleep (SWS) and EEG delta power (0.75-4.5 Hz), in a dose-dependent manner in healthy subjects2-4 and in patients with na...

STUDY OBJECTIVES Sleep deprivation can affect the waking EEG that may reflect information processing of the brain. We examined the effect of total sleep deprivation (TSD) on nonlinear dynamics of the waking EEG. DESIGN Paired-group design. SETTING A sleep disorders laboratory in a hospital. PARTICIPANTS Twenty healthy male volunteers. INTERVENTIONS Waking EEG data were recorded from sub...

Dreaming pertains to both REM and NREM sleep. However, frequency and regional specific differences in EEG activity remains controversial. We investigated NREM and REM sleep EEG power density associated with and without dream recall in 17 young subjects during a 40-h multiple nap protocol under constant routine conditions. NREM sleep was associated with lower EEG power density for dream recall i...

Electroencephalographic (EEG) activity in wakefulness and in sleep in humans was initially described in 1928. The earliest overnight sleep studies were performed in the 1930s using a polygraph to record EEG activity and electro-oculograms (EOG) on paper. Major milestones in the history of sleep medicine include the identification of rapid eye movement (REM) sleep in 1953, the description of nor...

BACKGROUND Sleep and sleep quality assessment by means of sleep stage analysis is important for both scientific and clinical applications. Unfortunately, the presently preferred method, polysomnography (PSG), requires considerable expert assistance and significantly affects the sleep of the person under observation. A reliable, accurate and mobile alternative to the PSG would make sleep informa...