I cant tell yoou about MT but the way is done in some chinese martial arts is like this:
First you need to be aware of your own gravity center, without that sensitivy will be noisy, unclear.
Secondly your "ground path" (Mike Sigman) must be pure, that means your skeletal aligment and muscle relaxation form a dense, compact body unity so any forces touching your arm go straight to the ground. In that way your feet and gravity center receive information in a direct way, without interferences.
This might sound a bit obscure but is pretty intuitive. Even if you dont practice wrestling or judo when you grapple with somebody for the first time - say a friend for fun - you "feel" when "it gives up" so you know when to go full force. This is the same but without the need to grip or grapple or lift any weight. With enough training you develope an acute awareness so your hands can register the minutest variations in the incoming (mostly horizontal) forces and instantaneously - without any thinking - transform them into a "3D image" so to speak, you feel his gravity center moving off balance in a 3d space, so you know when to push/pull, spin right/left, bring down /lift up or open/close his posture.
If i were to describe with a metaphor i