1179Re: [buildcheapeeg] Alpha/Theta feedback
- Sep 2, 2001Hi Joerg how are you ?,I i'm not sure wheter i understand the question.(is it a technical question or related to medtitation ?)From your writting i get the impression you cannotdo theta training, that is you don't produce theta ?1. I thougth the EEG should be adjusted to filter Alphaso as to give feedback to the practionar.2. If theta is the main goal, then the same for theta.3. If you would like to enter these states, then naturally(i guess) the first step is to become familliar with re-laxation (alpha). However, from what i know, alpha canbe improved at different places (front, back).If you do first relaxation, then if correct you automaticlyenter alpha state, that is if you don't let your thougthsup-set you. (visualize something nice).Alpha is if i'm rigth a state before sleeping, but it's easyto learn to enter this state and then use the state forprogramming yor-self etc.4. Theta goes deeper, one must be good in meditation orself-hypnosis. On the other hand, the use of softwarecan speed up this process. Theta is seen in hypnosis,and sleep. I guess if you want theta, then you must beable to meditate. When you close your eyes alpha ispresent, if you just relax alpha is present, but perhapsyou should learn meditation or mind-control to reach thetheta state.5. Inner perception: If in alpha on must try and "feel" thisstate to learn the different between tension and relax,the inner state then in theta is not easy to explain.From what i know, some people have evil images, whileothers have visions, i don' t know. It is said one comes(or can) come in cntact with the sub-conciousness.When i did a course in Silva Mind Control, they useda sort of hypnosis to "program" us to reach that state.i'm not sure wheter i did. In theta it had to be possibleto do "arm levitation" that is without normal force, thearm would rise due to suggestion. Few claimed theycould do it, but i'm not sure. it can be done however, butyou must use kind of protocoll to relax and go deeperin trance, EEG only gives information on your progress.Inner perception is (i guess) someting you can onlyexperience and tell for your self. Try to find a book ofSilva mind control by Jose Silva.RegardsFrans.5.----- Original Message -----From: Joerg HansmannSent: Sunday, September 02, 2001 1:41 PMSubject: [buildcheapeeg] Alpha/Theta feedbackHi,
since about 5 days I am using the comEEG prototype for
Alpha/Theta audio-feedback. Electrode positions for
1 channel are Cz - A2
(A2 should be right ear lobe. Is that right ? My picture with electrode-
positions is a little bit unclear).
Audio-feedback is given using two sine-wave oscillators (one lower
frequency for Theta and one higher frequency to indicate Alpha)
which amplitudes are controlled by the geometric addition
(root sum of squares) of the FFT output for each frequency band.
If a (fixed) threshold of 25uV is met, the feedback sound
is played at a low volume. A voltage between 25uV and 50uV increases
the volume and everything above 50uV is played at maximum volume.
With this setup I have been able to increase Alpha (lying position, eyes
closed), so that the Alpha-feedback sound is played nearly 100% of time.
However I have no idea how to get significant Theta.
What am I doing wrong ?
Should I train Alpha with higher thresholds first ?
And what is the great difference in
inner perception between Alpha and Theta ?
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