What is kaya- vinnana?

Question : What is kaya-vinnana? Answer : Kaya-vinnana, body-consciousness is the citta which experiences rupaswhich impinge on the bodysense. These rupas can be solidity, which can be experienced as hardness or softness; temperature, which can be experienced as heat or cold; motion, which can be experienced as motion or pressure. The bodysense through which these rupas can be experienced is also rupa.  Bodysense is to be found not only on the outside of the body but everywhere, except in those parts which are insensitive, such as hair or nails. The "Visuddhimagga" (XIV, 52) states that "it is to be found everywhere, like a liquid that soaks a layer of cotton". Also in those parts of the body we call "kidney" or "liver" there is body-sense; pain can be felt in these parts. When we notice any bodily sensation, be it ever so slight, it shows that there is impact on the bodysense. When we remember this, it can condition awareness of different kinds of realities, also when the impact on the bodysense is very slight, or inside the body.
Topic 64