“Seth material” search engine (Jane Roberts)

In your time the periods of high conscious activity would run approximately for three days, followed by a day and a half to four days of inactivity, according to the circumstances. This involves a transfer of conscious energy from a home system to an alien one, and certain more or less automatic changes must be made from system to system, involving the use of brain waves; certain patterns being normal in different systems. There are other brain patterns for example than those discovered by your scientists. The brain patterns simply reflect the kind of mental or psychic activity, and other kinds of activity will give you different patterns.

The drugs also help in changing the patterns when it is necessary. If the brain patterns were not changed on entering and leaving a system, then theoretically at least the consciousness could become trapped within any given system. Acceleration or de-acceleration, you see, but mentally. (Decelaration.)