The shaded area represents events which are subject to resonance (or eidopoic influences to use Marshall's term).
When I was designing the coin-tossing experiments reported above I seemed to be entirely free to choose as many or as few trials as I wanted - I did not seem to be subject to eidopoic influences (see the long paper for an explanation). Oval b, consciousness is therefore shown as unshaded above. Carrying out the experiment, on the other hand, required a lot of time and energy, and seemed at times to be particularly heavy going.
Oval c, memory, is shown shaded as Marshall and Sheldrake have suggested.
The suggestion is that the consciousness is unique in that it is free from resonance.
If creativity and memory where subject to resonance, we would probably not be aware of it. We would find that we sometimes unaccountably forgot certain important facts and that we sometimes failed to think of ideas that in retrospect seemed obvious - very much like my experience of life!
The diagram above has no particular physical implications. I have no idea whether the three functions - creativity, consciousness and memory - are arranged as separate parts of the brain, or whether they are three physiological processes that take place in many parts of the brain. I suspect it's something between the two extremes.