The present time is an era of vast mind expansion, where one individual inhabits, not only involving increased development of three brains mentioned previously, but also the maturity of a fourth brain. The new brain is still in the etheric (energy) stage; it has not yet manifested in the physical.

Each brain overlaps the preceding one. The first development of the fourth brain is under the crown chakra on top of the head, over the top of the two hemispheres of the third brain. It associates with the intuitional-compassionate level or fourth body and has a spiritual awareness. Though it has not yet demonstrated in the physical, it is still functional. Where the foremost attribute of the third or mental brain is thinking, the chief dimension of the fourth brain is awaring; a developed fourth brain will facilitate a person to receive new, formerly unknown information. Tapping in the Universal Mind, the fourth brain will have unlimited potential for receiving information.

There are etheric forms of brains five, six and seven, but their development is more far-flung. They connect to the corresponding bodies.