On the pages that produce the signals, there are 10 minute sessions listed. These
are for you to do short, test sessions.
To test a signal, apply it over the usually UNPLEASANT side for that signal, followed
immediately by the same signal over the same location on the other side of the head. Only a few people have 'reversed'
structures. If you get no response at all, you probably do not have one.
Not all signals have clear 'pleasant' and 'unpleasant' sides. In these cases,
you can test the two sides of your brain testing the right side first, and then the left. This is because the most
sensitive structure, the amygdala, is on the left. Each brain is different, and your response may differ.