How the Self Controls Its Brain

How the Self Controls Its Brain is a book by Sir John Eccles, proposing a theory of philosophical dualism, and offering a justification of how there can be mind-brain action without violating the principle of the conservation of energy.

Eccles calls the fundamental neural units of the cerebral cortex "dendrons[?]", and proposes that each of the 40 million dendrons is linked with a mental unit, or "psychon[?]", representing a unitary conscious experience. In willed actions and thought, psychons act on dendrons and, for a moment, increase the probability of the firing of selected neurons, while in perception the reverse process takes place.