So-called emotion is a locus of vibratory pain strong enough to create compulsion. We are taken by it, enthralled by its darkness so much that we adopt it as a concern.

A concern is the internal schematism of what was given as a torso somatic. Aversion makes various flavors of torso and face pain, which appear objective and drive new reaction (more aversion). This creates a tightness of craving to its opposite, and soon we are clinging to an absence and being furiously contrarian. We identify with this sensation-and-reaction situation, and our heart moves to the locus of the pain. We say of a feeling, It is mine. We are enthralled and animated by it.