The Experimental Neuromagnetic Signal Generator.
Experimental technology - Use at your own risk.
2) The signals are applied using the coils. Listening to them won't have any effect.
3) Test sessions are not nessessary for sessions done using the same signal over both sides of your head.
BASIC SAFETY POINTS
4) If you choose session designs that apply a signal to one side only, you will need to apply that signal to each side of your head, to feel the effects briefly before you begin with longer sessions. 10 minutes should be sufficient. If you don't feel anything, then you probably don't have a reversed structure.
5) Do not do more than one session every 72 hours. Testing one signal over each side counts as one session. Doing the test sessions all at once can lead to unpleasant effects, and can confuse the results. Test one signal at a time. Do not do more than one test every 72 hours.
6) If a session is a 'dud', try another design for the next session. Wait the full 72 hours before doing your next one.
7) Make sure your coils are completely plugged in.
8) Do not move the coils during a session.
9) Do not change signals during a session.
What to do during your sessions.
Above all, relax. If you keep wondering what's going to happen, you make it hard for your barin to enter the states of consciousness where things do happen. Even doing meditation can 'task' your brain, so that it's using parts that might need to be quiet for the session design you choose. Shakti can enhance meditation, but the reports of this have been where people did sessions first, and then meditation afterward, and not where both were done at the same time.
1) One hour sessions.
One hour sessions are more likely to create experiences during the sessions. These are the best-known sessions, having been featured in several Television documentaries. However, sensory deprivation is crucial if your sessions are going to create intense effects. These are most likely to happen with stimulation over the temporal lobes. A significant portion of the temporal lobes' activity is dedicated to monitoring background sounds. For the temporal lobes to be available for hallucinations, visions, and similar phenomena, this activity needs to be quieted down. Silence is important in this process. The sessions shown on television documentaries were done in an acoustic chamber - a bit like a closet that creates absolute silence. To have the best chances for experiencing phenomena during sessions, make your environment as silent as possible. Even a little noise can distract your brain from the phenomenal effects many people want to experience.
A blindfold is also a very good idea. It should block out all light, but not press your eyes.
One hour sessions should be done less often than shorter ones.
For best results, don't take it all too seriously.