by fshortt Thu Jul 29, 2010 10:21 am
Lambs-Wool wrote:i was under impression that alpha waves are usually produced only in very deep state of relaxation (like hypnotic trance) or deep meditative spell.... technically speaking, alpha waves are produced when brain activity is 'calmed' to a very low level, and the state that arises is probably close to being in trance or being asleep... if someone is in such deep mental state, would he recognize any external command by the practitioner, unless of course, the practioner had already programmed his (client's) mind to accept such commands ?
(ah, i m jst recalling from my memory what i had read years back about alpha, gamma and theta waves, please correct if my memory has failed me today
)
...
take care
salman
Hia Salman,
as Rzukic says in his reply. Just thought i would add, that all the brain waves are present at all times, it is just which one has greater amplitude.
Waking consciousness is Beta,
Alpha - like Rzukic said. Relax and pre-sleep, also at start of meditating (depending on how experienced with meditation one is - as meditation leads to theta, and i guess eventually delta dominant brain waves)
dreaming happens in theta
deep-dreamless sleep is delta which is sleep-walking and talking time, also the most different from our conscious beta mode.
Don't get me wrong, this is just a superficial guideline for the states, it gets quite complicated. (and also speaking from memory - been a few years since i actively studied this.
Anyway, the predominant brainwaves that are present during waking state is Beta and Alpha, having Theta and Delta working in the background so to speak.
Now which one of Beta or Alpha is predominant depending on your mode or mood i guess. For example, If you are relaxed and at ease, without [b]worry[b] you are most likely enjoying more Alpha-brainwave activity. While focusing and applying yourself in some task, in extreme "fight-or-flight" or physical activity, you are more likely to be exhibiting Beta-brainwaves.
Beta is looked upon as the conscious aspect so to speak, as it quiets down we go to sleep and Alpha then Theta and finally Delta take over.
REM (dreaming) all "classes" of brainwave activity kick in.
oh and Alpha-states are associated with healing, and it is where our brainwaves are more "synchronous"
rzukic wrote:Hi Salman
I certainly can not claim to be an expert in the field. Though it would depend how one defines very deep state of relaxation. For my taste Alpha is not very deep state since it is from 8-12 Hz. Brain starts producing alpha waves even when we close and roll back our eyes.
Beta 12-38 Hz
Alpha 8-12 Hz
Theta 3-8
Delta 0.2-3 Hz
Now-days they even offering some nice software that can lead us in desired state. One of such is NP2 and they have very good info on scientific research as well. Here is the link
NP-2 Regards,
Resko
thanks for the link.
here is a quick summary i found for anyone interested but don't know much.
http://web.mst.edu/~psyworld/sleep_stages.htmf
Last edited by fshortt on Thu Jul 29, 2010 10:26 am; edited 1 time in total (Reason for editing : just for fun :))