On the mental plane the five lower subplanes have to be subjugated during purely human evolution. The seven senses or the avenues of perception. The control of the senses in yoga practice. They axe the avenues inward. They are the avenues outwards.
Sensation is latent in every atom of substance.
The Sun is the heart of the system and sensation emanates from there. Knowledge is the end of sense. There is a double set of senses, spiritual and material. This finds its reflection in the double set of physical senses noted in defining the indriyas. The elements are the progenitors of the senses.