I tend to see imagery vividly when I read. Not always, but if the narrative's working for me, the image is rather clear.I'm not entirely sure what you mean by this.
So what I mean is I had a mental picture of the character—of grass getting stomped on—and of the character getting pushed down onto the ground. The funny thing is NOW I see him as a rat-person, but he's still wearing the same vest and glasses as when I pictured him human. He doesn't look much different as a rodent.