Nice Bytes
Relaxed states are usually reflected in eeg as alpha signals (8 to 12 Hz). This
software (I called BScan) reads the output from the eeg amplifier through the serial port
and generates a soft audio tone (at the sound card output), that decreases its frequency
as the alpha signals become more dominant. With this feedback, your mind will eventually
"learn" to relax. Don't try to force this state. Just loosen your body and don't
pay attention to thinkings.
After a while, many people (including me) will tend to fall into sleep. But this is
usually preceded by bursts of eeg signals around 13 to 14 Hz. The program will notice this
and feedback a short "beep", just to keep you awake.
The resultant relaxing experience is usually a joy, and hopefully, after 20 or 30 minutes,
you may have a chance to experience amazing conscious states.
On another research, the program can be modified to monitor dreaming eeg patterns and
feedback a beep to help you become conscient of the dream.
The second program (BSplit), reads an already recorded session and displays just the
spectral view, at a rate of 5 minutes per screen, so you can have a wider picture of the
signals and compare to subjective experience.
The programs are amazingly simple and written in archaic jewel DeSmet C for DOS. Read
source comments for details, and rewrite for any modern stuff if you like.