You only need to do test sessions if you want to do sessions over only one side of your head. Several of the signals are more pleasant over one side then the other, so there is good reason for intermediate and advanced users to want to do this.

One side will feel more pleasant than the other. Use that wave form over that side of your head.

Most people will end up with one wave form that feels better on one side than the other.

Please read this warning below, and look at the animation. It will teach you another point of neuroscience that will help you understand how Shakti works. The point is that test sessions should be only ten minutes long, and why the sessions have limits on their length..

In this Example, The Hippocampus is shown blue. The Amygdala is shown Red.

For these test sessions, I suggest between 5 and 10 minutes on each side. Then ask your self which was nicer. It should be quite obvious. After that, for you, that signal belongs on that side. People who ignore procedures might find themselves feeling bad after their session. If you do a longer session using only one wave form, and the experience is being pleasant, you might suddenly find the session suddenly turning unpleasant. Shakti is applied using only one wave form in extended sessions only in special situations. This represents the hippocampus receiving a stimulation over time. The view is from the left, but let's pretend it's the right hippocampus. You can see how activity in the right hippocampus (positive thoughts) can 'spill' into the right amygdala (negative emotions). In this scenario, a nice session where visual imagery might have been happening, might suddenly have a burst of anxiety intrude. A burst of anxiety or fear is usually a sign that a using the hippocampal signal has gone on too long. The appearance of negative thoughts or visual imagery is a sign that an amygdaloid session has gone on too long. To end the anxiety or unpleasant thoughts or images, end the session. Don't be worried. The positive structure you were working with will have had more activity than the intruding one, so once the bad mood has passed, it will be far less likely to return than the nice one that happened during the session.

Begin with the negative side for each signal when testing in this way. When you then switch to the positive side for that signal, you may elicit a burst of activity in the positive structure, which will feel quite pleasant.