The K-complex as a special reactive sleep slow wave – A theoretical update. (October 2016)

• Record Type: Journal Article
• Authors: Halász, Péter
• Is Part Of: Sleep medicine reviews. Volume 29(2016)
• Page Start: 34
• Page End: 40
• Publication Date: 2016-10
• Subjects: K-complex -- Reactive sleep EEG elements -- Sleep slow waves -- Acoustic evoked responses in sleep -- Input related NREM regulation; Sleep disorders -- Periodicals; Sleep Disorders -- Periodicals; Sommeil, Troubles du -- Périodiques; Electronic journals; 616.8498
• DOI: 10.1016/j.smrv.2015.09.004
• Languages: English
• ISSNs: 1087-0792

Abstract

Summary: We aimed to integrate new data about K-complex (KC) physiology and relate KC to other low-frequency waves observed in slow wave sleep. KC can be considered a 'prototype' of reactive sleep slow waves. Similarly to slow waves, KCs feature up- and down-states, they are subject to homeostatic regulation but they are also associated with sensory activation. As a part of the continuum of reactive sleep slow waves, the study of the KC may offer a better understanding of how slow waves are activated by the sensory system. KCs appear to have a special place among sleep slow waves and in the newly established framework of input-related NREM sleep regulation. It is a key element highlighting how the brain may choose to maintain sleep in response to a sensory input when facing the question "to wake or not to wake".