For me, it was as follows:
– Can’t remember anything
– Can’t think clearly
– Can’t focus
– Thinking process much slower than before
– Feeling like you are drunk, but not in a good way
When it clears, it is very noticable, like a thick fog lifting.
It goes beyond not having an interest in communicating; you literally don’t have the brain power or memory to have a conversation at normal speed. You can’t remember much of anything, and you can’t think of anything much to say.