I was sitting at my first color and light lecture the other day, after first 25 minutes of which I heard more about color than I ever thought possible. So, about 1.5 hours into it, my mind began to wander. My prof kept repeating, "eye-brain," "eye-brain," and a student finally asked why. So my prof dropped this phrase, saying that some scientists suggest that the eye is a part of the brain that is exposed. At this point my eyes and mouth widened. So, please tell, did I hear him right, and please direct me to the doctoral research work that would support that statement. Many thanks. PS. To any professors/teachers at these forums: never, ever drop anything in the middle of a lecture, bc google is not helpful.