Is There a Bounded Comprehensive Organ of Consciousness?

In Homer there is no word for the comprehensive bounded organ of consciousness. The word Plato uses sukei has evolved from being simply the thing which leaves you when you die and plays no role in your life to the most important thing about your life. Your inner self will indeed leave you when you death and is immortal. So this is an enormous transition in which the sukei becomes at the center of attention for Plato. Now if you turn to the Indian material with this question in mind and ask the same question of the Rigveda is there a bounded comprehensive organ of consciousness the answer in so far as I can see after some research is no.