How do we perceive time? I use my own notation for doing this and I'll show you how I do it.
If notation isn't your thing just skip it. Most people don't like it but I do.
I use:
x , (lower case) for all physical matter
Y , (upper case) for sufficiently large neuron groups
(o) , (lower case in parenthesis) for mental content
So, [neurons, (mental content)] in notation is Y(o).
Thinking would be Y(content; initial) ---> Y(content; step 1, step 2, etc.) ---> Y(content; final).
Input would be x ---> senses ---> Y(o).
Output would be Y(o; activate muscles) ---> muscles ---> x.
So this is a process notation with just three basic elements, that's all you need. I use a semi colon to clarify or add detail. There is never a situation were (o) is separated from it's supporting neurons so it's entirely physically based. I do more complicated ones by adding known details and writing in the margins but those get messy. Seems to be useful and I seem to make progress faster.
Communication would be [person 1; Y(o; Hello) -->x; voice] -->x; sound waves --> (To person 2)
x; sound waves --> [person 2; -->x; hearing --> Y(o; Person 1 is saying 'Hello').