What is a mental state of consciousness? 
A state is a moment with practical no duration ; 
when there is something happening in the brain.
So, there can be no thought in it. 
Because a thought takes time. 
So, we should use the verb instead of the noun. 
Because the verb needs the time. 
So no state but a process.  
What is happening?
I don’t know why this is not been done