Quantitative analyses of electroencephalogram (EEG) during sleep have made it possible to establish “slow-wave activity” (SWA) as a biological marker of sleep depth and sleep homeostasis. Homeostasis is a basic principle of sleep regulation: it indicates that a sleep deficit induces a compensatory increase in sleep intensity, while excessive sleep reduces sleep propensity. Sleep deprivation affects EEG activity in the subsequent recovery night, mainly by increasing SWA. This rebound is maximal over the frontal areas of the cortex. This and other quantitative EEG findings support the notion that every sleep phenomenon, from sleep onset to the awakening, is strictly local in nature.
Electroencephalographic and Neurophysiological Changes / Gorgoni, Maurizio; Salfi, Federico; De Gennaro, Luigi; Ferrara, Michele. - (2021). [10.1016/B978-0-12-822963-7.00038-4].
Electroencephalographic and Neurophysiological Changes
Gorgoni, Maurizio;De Gennaro, Luigi
;
2021
Abstract
Quantitative analyses of electroencephalogram (EEG) during sleep have made it possible to establish “slow-wave activity” (SWA) as a biological marker of sleep depth and sleep homeostasis. Homeostasis is a basic principle of sleep regulation: it indicates that a sleep deficit induces a compensatory increase in sleep intensity, while excessive sleep reduces sleep propensity. Sleep deprivation affects EEG activity in the subsequent recovery night, mainly by increasing SWA. This rebound is maximal over the frontal areas of the cortex. This and other quantitative EEG findings support the notion that every sleep phenomenon, from sleep onset to the awakening, is strictly local in nature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
