I have often pondered as to whether spirits can touch and feel things. We know that spirits are more fine and pure. We know that spirits can float and can appear and disappear. I guess there are no scriptural references that show that spirits can go through walls but I've always just assumed that spirits could do that. We also believe that our soul is made up of a spirit body and a physical body. If spirit is more fine and can travel through walls, how does our spirit stay in our bodies? Even more interesting question is, how does our spirit control our bodies? There must be some connection between our physical body and our spiritual bodies. Where is that connection and how does it work? Is there a special connection in the brain that allows our spirit to communicate with our bodies?
The only answer I have come up with comes from D&C 7:7. "Spirit is matter". It says that "There is no such thing as immaterial matter." So, spirits do have matter, but it is finer and purer. There must be enough matter there to be able to make a connection with the body and communicate with it. How it stays inside the body is a mystery and is probably predicated by a law of God. It will be interesting to learn just how spirit bodies communicate with physical bodies once we leave this life and start learning things in the afterlife.