Compare Heart and Brain
The Brain (what some identify as mind) is no different than the organ we name the heart.
The heart is an organ capable of receiving stimuli or sensations. Feelings that flow through our body happen in precisely the same way as thoughts pass through the brain.
Furthermore, the inner sound in our skull which we classify as thinking associated with a thinker, person, or ego is just as relative to saying that a soul associated with an experiencer lies inside the heart.