(mental action) and the attentional manifold:

When you’re "doing things" in meditation, with what are you doing it? Your muscles? Your mind? Your phantom/ghost hands? Subtle or gross eye activity? Your jaw? The muscles in the back of your neck? The muscles in the back-base of the skull? Are the big motions or small motions? Sweeping or perfectly still attention? Vague or pin-point precision? Two dimensional, three dimensional, or conforming to a surface?