What part of the brain responds to visual descriptions?
"Talking about the pictures and the story they depict, activate the organizational centers in the frontal lobe and serves as an important step in helping students bridge from visual-spatial thinking to verbal production."
"Creating symbols and pictures to represent knowledge is a powerful way to reinforce our understanding. It can be surprisingly difficult to convey meaning without the use of words, so the task itself can become a high-level synthesis and meaning-making activity. It is a challenge for verbal learners to expand their thinking and expressing." Michael Gurian
The process of trying to capture the main concepts and put them in to a graphic representation is a high level synthesis task.