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Delta Brain Waves

The Research:
Delta waves are the slowest of all brain waves, and are predominantly associated with Stage 3 and Stage 4 sleep.

However, researchers have found functions for delta stimulation beyond those related to sleep, as you have seen in the studies above. Stimulating delta in people who are wide awake has been shown to have additional benefits such as increasing relaxation and relieving certain types of pain.

The first two studies highlighted in the infographic above were cited in Dr. Tina Huang's landmark overview of brainwave stimulation, "A Comprehensive Review of the Psychological Effects of Brainwave Entrainment."

The third study, on improved sleep, was conducted by David Siever, one of the leading experts in the field today.