Full Idea
The 'binding problem' is how to explain how the brain binds all our different stimuli into a single unified experience of an object.
Gist of Idea
Explanation of how we unify our mental stimuli into a single experience is the 'binding problem'
Source
John Searle (The Mystery of Consciousness [1997], Ch.2)
Book Reference
Searle,John R.: 'The Mystery of Consciousness' [Granta 1997], p.33
A Reaction
This may be the best way of expressing what philosophers call (after Chalmers) the 'Hard Question'. Large objects are held together by gravity, and small objects by electro-magnetism. We don't see a 'binding problem' in the function of a leaf.