From: frans smith (f.smith_at_c...)
Date: 2001-09-03 02:38:39
----- Original Message -----
From: Joerg Hansmann
To: buildcheapeeg_at_yahoogroups.com
Sent: Monday, September 03, 2001 1:07 AM
Subject: Re: [buildcheapeeg] Alpha/Theta feedback
Hi
----- Original Message -----
From: frans smith <f.smith_at_c...>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Sunday, September 02, 2001 2:55 PM
Subject: Re: [buildcheapeeg] Alpha/Theta feedback
The technical stuff was intended for the feedback-experts
here to check out, if I have made some obvious mistakes
in electrode placement or protocol implementation.
**I see.
> However, from what i know, alpha can
> be improved at different places (front, back).
So I should reconsider the electrode placement ?
**don't know. all depends (i guess)wheter
you are using eeg for altering states.
or using eeg for neurofeedback therapy.
Deliberately concentrating on anything (pictures etc.) immediately
cancels Alpha and lets me fall back to Beta.
**strange. when reading a book, or visu-
alizing someting nice, like walking in
the woods, would normaly bring you into alpha.
By concentraing one can activate smr/low beta, could
this be the case ?
By using inner speech with positive suggestions ? (Like in autogenic training or self hypnosis ?)
**yes.
There are many kinds of meditation. Would Vipassana be suitable ?
** i guess so.
Have you experienced Theta during meditation ?
no, not really. however years ago i did
use theta-brain tapes (sound) to reach
the theta state.
But as i have experienced my-self, one
must not do such a thing unless one is
mental healthy (no heavy stress, depres-
sions etc). For it could make things worse.
Yes. I have read of "interesting" hypnogogic imagery
similar to those induced by psychedelic drugs like
LSD or mushrooms.
**some refer to the sub-concious as the
main reason for evil experiences. The
sub-concious holds your traumatic ex-
periences.
That is why I am especially interested in Theta.
** In that case you could use braintapes.
However, you could use eeg to guide
you, give feedback. I have once post a
design from 1970, this design is not
for nfb, but i only tells you about
the state your are in (alpha, theta).
Using the rs232, you don't need to do
a combination a waves, but first only
alpha training, afther succesfull trai
ning you would go further in to theta.
Then the eeg should only give feedback
on theta-state.
I have read some books written by Silva. However I did not
have the impression that the counting technique worked very well for me.
** I think autogene training is better,
but it takes a long time.
Also I am not skilled in imagination of
inner pictures.
** I have the same, but it is a skill
every body can learn. In fact it's
like training a muscle. it a normal
ability for everyone, but some need
to activate this.
Regards,
Frans.
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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:32 BST