When I was much younger, I was interested in the Occult and Mysticism. I hoping to gain some first hand experiences of the paranormal. During my search for experiences, I eventually dabbled in a type of yoga called Kundalini Yoga.
The premise of this style of yoga, was we have seven psychic centers; tailbone, spleen, navel, heart, throat, mind's eye (between the eyes), top of the head. The idea was to use breathing exercises and visualize these seven centers, one at time, absorbing energy as we breath in and and the moving that energy up the spine, then out of the top of the head as we breath out. You do seven deep breath for each center starting at the bottom; tail bone at the tip of the spine, then upward; seven times seven.
I used to use this system to learn things from others, without words. I would move my hand along another person's spine, without touching and based on the centers I would feel with my hand. I could know their place in their life journey.
To make a long story short, I had reached a point where some unique experiences began to occur. This may be a technique for others to gain some kool data. I had to stop because it was getting scary. The last experience, made me feel like the energy centers were not just vibrating, but they were expanding and merging. This may be feel like I had ballooned up, and I was was starting to leave my body, floating above it.
This had been one of the goals of the yoga, but once is was happening, I was afraid, since I was not sure if I could get back into my body if I floated too far away. I stopped all the occult stuff; over night, and decided to study psychology, to see if there was a science; psychological or neural explanation, for these unique experiences. Thinking it was due to the brain was less scary than thinking it was spirits outside me.
The brain appears to have some extra features we have yet to develop and/or which humans have repressed. These cannot be easily investigated with the scientific method, as currently written, since you need to go into your own brain via your consciousness and manipulate the neural gird; you have to become the scientist and the neural experiment. This cannot easily reproduced by others, since there are no tools for this purpose besides our own unique consciousness. However, from the inside one can still act like a scientist and try to observe and record the data.
One of the pitfalls is maintaining objectivity at all times. As an analogy, say you were doing a study on the pain of a toothache. To become the scientist and experiment you will need to have you tooth drilled so you can live inside the pain and not just observe it outside yourself. The pain will be a distraction that takes concentration to keep in check so you can stay objective. Science made this the last frontier since objectivity is hard enough never mind while under constant fire. Religions dare to go there. The fact is, you will need both science and religion; objectivity and a way to deal with the unknowns that can swallow objectivity, to such neutral software experiments.