Where in the brain is proprioception taking place? Does that part light up in my fMRI when I'm sketching? Is it the same area bats use flying blind, or when a cats' whiskers tell her she can't fit through the fence? Is that the same part of my brain that knows to send parallel lines converging toward their common vanishing point, or that judges an angle too acute to represent 90º in perspective?
A blind contour drawing exercise liberates the sensitive, free-wheeling right side of my brain from its linear, judgmental master on the left. What depth cues can the right side convey without "thinking"? I look for the answers in these sub-10-minute blind contours. Can you get a sense of the amount of space depicted?