“Seth material” search engine (Jane Roberts)

(There are four recognized [electrical] brain waves, and in speed they range upward from 0 to 26 and more Hertz units, or cycles per second. These rhythms can vary somewhat, and are best thought of as areas of activity. Brain waves overlap. Very simply, delta brain waves are connected with dreamless sleep, theta with creativity and dreams, alpha with a relaxed alertness and changing consciousness; beta — the fastest — with concentration, and with an intense focus upon all of the challenges [and anxieties and stresses, many would say] faced in the ordinary daily world.

12. When Jane began speaking for Seth we checked out the definitions for concepts like dissociation, trance, and so forth, without being particularly influenced by what we found. We merely thought the meanings given were quite incomplete, so we decided to go our own collective way. As the sessions progressed we came to understand that for Jane dissociation simply meant her ability to direct an intense concentration toward certain highly creative goals — Seth and the sessions — so that we could learn from them.

“Some of these conditions could be called the result of psychological atmospheres that surround the earth, say. I do not travel physically in a UFO (with amusement), and yet my mental or psychic journeys must occur in a medium of some kind. There are rhythmic activities in that atmosphere that I count upon and use, as for example a sea captain might use the rhythm of the waves for his voyages. Those inner atmospheric ‘waves’ have a certain regularity. They are more intense at certain times than others.”