@existential potential,
I don't view the mind as being a substance but rather a reaction event. I like to use the chemical reaction of fire as an example of what I think the mind to be.
When you have a piece of carbon and bombard it with some oxygen molecules with just the right amount of energy so that those oxygen molecules combine with the carbon this is what we call fire. Most people don't look at it or know that it is just that simple.
Similar to this reaction i see the mind is just the reaction of the chemical process of electrical impulses crossing synapse of neuron cells. That process is what is the "fire" we call mind. When this process ceases to function so does the mind.
So for me the mind is an event, not a thing so much.