Here’s some comments on brain waves by Adano Ley (Swami Nitty-Gritty) …
“Your brain has four speeds. Beta is stick shift, or the chemical level. Alpha is automatic, or electrical. Theta is cruiseomatic, or magnetic. Delta is hand-controlled automatic-cruiseomatic.”
“Tunnel-consciousness people tend to remain in beta brain wave states of consciousness. You can’t repeat your name before you are given it.”
“It takes alpha to decipher and theta to live up to what you say.”
“A trance is conscious sensory-motor semi-organic relaxation at a theta level.”
“John the Beloved was the youngest disciple. He was the only one who could lock into delta. All the other disciples locked into theta.”
Delta has been called (by science writer Graham Lawton) “moving out of your house while the builders are in.”
Potassium ions escape from neurons and hyperpolarize the brain during non-REM delta slow wave sleep (SWS), while REM theta brain wave sleep restores the leaked potassium back into the neurons.
REM (rapid eye movement) sleep is predominantly a theta brain wave state, an “off-line memory processing” concerned with survival skills.
Predation is associated with theta in a cat, apprehension in a rabbit, and exploration in a rat.
Lab-made L-tryptophan causes some people to skip the initial stage of sleep and proceed directly to the REM theta state.
They skip the NREM (non-rapid eye movement) stage, missing the span when delta predominates.
In both Occidental and Oriental monasteries, the monks often rise at “God Time” because they are in a natural theta brain wave state at that time of day.
Using a golfing analogy, at other times, it takes a long DRIVE from beta and alpha to reach the delta state of deepest meditation, while between the hours of 2:30-6:00 am, it takes a mere PUTT to get there.