“Seth material” search engine (Jane Roberts)

Once these physical pathways are opened, the way becomes easier. The pineal, pituitary, and thalamus are important here. The salt mentioned earlier has a connection with the thyroid. The physical brains alone, the unused portions, have it within their ability, for example, to hear color, to smell sound; in other words, these portions contain among other things functions, unused mainly, that would allow you to perceive physical reality in various other fashions. These undifferentiated areas existed first before the specialized sense apparatus was uniformly adopted.

Those who perceive this set of data in such a way that agreement is reached are called sane. But none of you perceives the same reality. Those whose ideas and perceptions of reality are completely out of line with the general agreement are called insane. The terms only show that reality as you know it is the result of private perceptions. Reality is built up as a result of these private perceptions.

Now. On other terms psychedelic experience, with or without drugs of course, enlarges the range of electromagnetic realities that you perceive.