Sublime

neuroscientist Michael Persinger’s God Helmet.

Delta waves, the slowest frequencies (2–5 Hz) are seen most often during sleep. The brain is in an idling state, and the mind is turned inward. If people have too much slow-wave activity while they’re awake, their thinking is foggy and they exhibit poor judgment and poor impulse control.

hypnagogic

One of the very few relevant surveys in the past ten years showed that over 25 percent of our national population recall having at least one spontaneous out-of-body experience.

The areas that showed a decrease in activity are the medial prefrontal cortex and the posterior cingulated cortex, which play important roles in the regulation of self-awareness,

Olga Kharitidi

Alpha mode is when one's brain is running at 8 to 13 cps (cycles per second). It is generally characterized by “daydreaming,” or what Dr. Langer called “relaxed, focused concentration.” Beta mode is when one's brain runs anywhere from 14 to 100 cps. This is when our brains are alert, observant, and aware of the things going on around us.

The Master of Lucid Dreams.

I urge an elderly individual who may be concerned about their sleep not to seek a sleeping pill prescription. Instead, I recommend you first explore the effective and scientifically proven non-pharmacological interventions that a doctor who is board certified in sleep medicine can provide.