AP PSYCHOLOGY

Detailed explanation-1: -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-2: -EEG delta waves are high-amplitude brain waves and are associated with deep sleep stages.

Detailed explanation-3: -A delta wave is a type of high amplitude brain wave found in humans that is associated with deep sleep. Delta waves have a frequency from one to three hertz (Hz) and are measured using an electroencephalogram (EEG). 1.

Detailed explanation-4: -Delta waves are slow EEG waves that oscillate from about . 5 to 4 times per second. Delta waves tend to be large in amplitude. Delta waves are rarely seen in the healthy waking adult EEG but are prominent and normal during sleep, especially of infants, children, and young adults.

Detailed explanation-5: -DELTA (0.1 to 3.5 Hz) It tends to be the highest in amplitude and the slowest waves. We increase Delta waves in order to decrease our awareness of the physical world. We also access information in our unconscious mind through Delta. Peak performers decrease Delta waves when high focus and peak performance are required.