Delta (0.5-3 Hz) is associated with deep sleep, when the body is engaged in a process of healing and restoration. When Delta waves are dominant, the brain increases its production of Serotonin, a neurotransmitter associated with positive and relaxed mood states.

Excess Delta: Brain Fog, ADHD, Brain Injury, Learning Disabilities.

Deficient Delta: Depression, Burnout, Stress, Poor Sleep Quality, Chronic Fatigue.

Well-Balanced Delta: Memory Encoding, Physical Repair of the Body’s Tissues.