Full Idea
Processing of images and mental models seems to require, and therefore is unlikely to replace, computation and representation.
Gist of Idea
Images can't replace computation, as they need it
Source
Georges Rey (Contemporary Philosophy of Mind [1997], 10.1.2)
Book Reference
Rey,Georges: 'Contemporary Philosophy of Mind' [Blackwell 1997], p.266
A Reaction
A good point. If you are a fan of mental imagery, you still have to explain how we can hold an image, or recall it, or manipulate it. I always, I don't know why, wince at the thought of 'computations' among neurons.