What is another word for delta rhythm?
Pronunciation: [dˈɛltə ɹˈɪðəm] (IPA) 
Delta rhythm, also known as slow-wave sleep pattern, refers to a brain wave pattern that occurs during the deepest stage of non-REM sleep. It is characterized by slow and high-amplitude waves that occur at a frequency below 4 Hz. Other terms used to describe delta rhythm include slow-wave sleep pattern, slow-delta wave sleep, and delta activity. Delta activity is also used to describe the presence of delta waves in the brain during periods of wakefulness or light sleep. Additionally, delta activity has been correlated with physical and mental fatigue, as well as decreased cognitive abilities, making it an important indicator in various medical and research applications.
