Sleep deprivation significantly increased frontal low EEG activity (1-7 Hz) over time awake compared to sleep satiation, demonstrating that waking frontal EEG activity reflects sleep pressure levels.
Does sleep deprivation compared to sleep satiation alter waking EEG dynamics, subjective sleepiness, and core body temperature in young volunteers?
Changes in frontal low EEG activity during wakefulness are primarily determined by sleep-wake dependent processes rather than circadian modulation.
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 (FLA, 1-7 Hz) during sleep deprivation exhibited a prominent increase as time awake progressed, which could be significantly attenuated by sleep satiation attained with intermittent naps. Subjective sleepiness exhibited a prominent circadian regulation during sleep satiation, with virtually no homeostatic modulation. These extremely different sleep pressure conditions were not reflected in significant changes of the CBT rhythm. The data demonstrate that changes in FLA during wakefulness are to a large extent determined by the sleep-wake dependent process with little circadian modulation, and reflect differential levels of sleep pressure in the awake subject.
Cajochen et al. (Sun,) reported a other. Sleep deprivation (high sleep pressure) vs. Sleep satiation (low sleep pressure) was evaluated on waking EEG dynamics, subjective sleepiness and core body temperature. Sleep deprivation significantly increased frontal low EEG activity (1-7 Hz) over time awake compared to sleep satiation, demonstrating that waking frontal EEG activity reflects sleep pressure levels.