When we are asleep and dreaming, our brain typically fires nerve impulses in the delta wave state at 1 to 3 cycles per second or hertz (Hz). When we awaken, the brain typically moves rapidly towards alpha brain waves that fire at 8 to 13 Hz. This is a resting state in which we are awake and aware, but we’re not doing anything inparticular. When we have our first espresso of the day, our brain waves move into beta-wave states that fire at roughly 13 to 20 Hz. These are high frequency brain waves in which we concentrate, do our work, and in which we function for most of our waking reality….
Below the alpha state and above the delta state of sleep is an in-between zone commonly called the theta wave state in which the brain typically fires nerve impulses between 4 and 7 Hz. This is a deep, reflective dreamlike state that has been recorded in Zen masters and transcendental meditators, in psychics and trance mediums, and in shamans in altered states of consciousness.
In the theta state, the visionary experience is easily accessed….The drum or rattle is of great service in accessing this visionary state of consciousness. As we listen to the monotonous percussion of the drum or the dry whisper of the rattle, beaten or shaken at four to seven beats or shakes per second, both halves of the cerebrum entrain to this rhythm, essentially following the sonic driving of the drum or rattle.
In response, both halves of the brain synchronize, slow down, and start firing impulses at 4 to 6 Hz., thus allowing an individual to enter the theta state of light trance. It is precisely here that we may find that numinous space between the worlds.”
Sandra Ingerman in Awakening to the Spirit World
Isogaisa 2014 Russian Sami Shaman Group
https://www.youtube.com/watch?v=2mf3RJdtC9Y
Bear Foot Holistics 
Very interesting, thank you for sharing this teaching xxxx
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Your welcome xx
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Very well written. Lack of sleep has it’s benefits in thinning the veil too. The altered state is like a muscle, the more we use it the stronger it becomes. I recommend binaural hemi-sync tracks that you can get from the net. They really clarify visionary experience and beef up that third eye!
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Yea, personally they don’t do it for me, though I have friends who swear by it. Guess we all find our own gateway through the veil. 😊
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In my case lack of sleep is not by choice. It’s just life unfortunately. But at least I can find a use for that!
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Very informative and helpful. I have had several shamanic experiences due to sleep deprivation, sometimes which I didn’t set out to have at all. OBE’s can sometimes be scary if a person isn’t prepared first. So, big reason to learn more and more over the years.
Since my hands give me trouble a lot, I frequently listen to isochronic or binaural beats to help achieve that theta state. Or many other types of meditation music, perhaps either a guided or a well known visualization whuch my own inner guide can lead me through.
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