Intensity - Going through an enlightenment experience regardless of belief makes people experience intensity through feelings of love, joy, or awe. These intense experiences is likely associated with increasedactivity in the limbic system which is the brain's primary emotional centre.
Unity - When we feel a profound sense of connectedness with the rest of humanity, God, or the Universe it is associated with a decreaseofactivity in the parietallobe of the brain that stores sensory information.
Clarity - Our sense of clarity is related to the thalamus that is the central structure that connects various parts of the brain to each other and it is what establishes our consciousness.
A Sense of Surrender - With a decreasedactivity in the frontal lobes during intense enlightenment experiences we lose the sense of purposeful control.
Transformation - The feeling of transformation comes from the increased activity and thickness of the frontal lobes. This area regulates our emotional responses and our overall cognition. Therefore continuous usage of this area solidifies the aspect.