Cyclic alternating pattern
Cyclic Alternating Pattern (CAP)
Cyclic Alternating Pattern (pronunciation: /ˈsaɪklɪk ˌɔːltəˈneɪtɪŋ ˈpætərn/) is a neurophysiological pattern observed in the EEG during sleep. It is characterized by sequences of brain waves that alternate between periods of arousal and periods of relaxation.
Etymology
The term "Cyclic Alternating Pattern" was first introduced by Terzano et al. in 1985. The term is derived from the cyclical nature of the pattern, which alternates between different states.
Description
CAP is a fundamental component of NREM sleep, and it is associated with sleep instability and fragmentation. It is characterized by a periodic EEG activity occurring during NREM sleep, where sequences of cortical arousal (phase A) are followed by periods of EEG background activity (phase B).
Related Terms
- Arousal: A state of being awake or reactive to stimuli. In the context of CAP, it refers to the periods of increased brain activity.
- Electroencephalography (EEG): A method to record electrical activity of the brain. It is used to detect CAP.
- Non-rapid eye movement sleep (NREM): One of the two basic states of sleep. CAP is a fundamental component of NREM sleep.
- Cortical: Pertaining to the cortex, the outer layer of the brain. In the context of CAP, it refers to the area of the brain where the pattern is observed.
External links
- Medical encyclopedia article on Cyclic alternating pattern
- Wikipedia's article - Cyclic alternating pattern
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski