These facts of experience present something of a puzzle if we understand perception simply as the brain’s response to stimulation. To preserve that view, one has to posit some mechanism by which the discrete perceptual profiles of the tree somehow get integrated into a whole by the brain; there must be some kind of “processing” that leads to a “representation” of the tree in the mind.3 The basic supposition in this, the standard view, is that vision may be understood by analogy with a still
