PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -EEG delta waves are high-amplitude brain waves and are associated with deep sleep stages. The delta waves are also associated with different brain functions other than deep sleep, e.g., high frontal delta waves in awake subjects are associated with cortical plasticity.

Detailed explanation-2: -In the deepest level of sleep, stage IV sleep, the predominant EEG activity consists of low frequency (1–4 Hz), high-amplitude fluctuations called delta waves, the characteristic slow waves for which this phase of sleep is named.

Detailed explanation-3: -Delta Waves Delta waves are associated with a state of deep sleep. This is the brain wave you experience when you are in a deep, restful sleep. Delta waves can help improve your immune system and reduce stress levels. When delta wave activity is dominant, a person is in a very deep sleep and not dreaming.

Detailed explanation-4: -All the way at the bottom of the spectrum of brain waves-below theta waves-are the low, deep, slow delta waves. Both delta waves and theta waves occur when you’re asleep, but delta waves are the waves that dominate when you’re in a period of deep, restorative sleep.