They then recapitulate Edelman's still controversial theory of somatic selectionism during early development which controls the topology of a particular brain and enables restructuring in response to experience.
This leads to a discussion of primary consciousness which integrates with perception into a means of directing immediate behavior and requires significant levels of reentrancy to achieve its effects.
These functional clusters are only slowly coming into the range of PET or fMRI scanning technology which commonly require much longer time scales.
A small perturbation of a group of neurons can affect the whole in a very short space of time provided the system is kept in a state of readiness by the thalamus.
The evolution of language centres in the brain leads to higher order consciousness which enhances subjective experience and enables humans to describe qualia which are however experienced by a much wider range of animals.