AP PSYCHOLOGY

Detailed explanation-1: -Delta waves are associated with the deep sleep stages: stage 3 and REM. During stage 3, less than half of brain waves consist of delta waves, while more than half of brain activity consists of delta waves during REM sleep.

Detailed explanation-2: -EEG delta waves are high-amplitude brain waves and are associated with deep sleep stages.

Detailed explanation-3: -Physiological Origin of Delta Wave Rhythms Most Delta that is recorded from the scalp in routine EEG is cortically generated and seems to be an intrinsic property of the pyramidal neurons that are primarily responsible for generating the scalp recorded EEG (the cortex is the surface of the Brain).

Detailed explanation-4: -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. They measure in the 0.5 and 4 Hz range.

Detailed explanation-5: -Deep, slow brain waves known as delta waves begin to emerge during NREM stage 3 sleep-a stage that is also referred to as delta sleep. This is a period of deep sleep where any noises or activity in the environment may fail to wake the sleeping person.