Mathematical brain model was developed by ukrainian scientist. Also was discovered psychosis pathophysiology and effective mental treatment method, based on this model. Full concept you can read here http://www.psychosis-pathophysiology.org/ But now only in Russion. Translation is preparing..
In a few words:
We wont prove now, that knowledge is a skill and that skill is formed by multiple reiteration of some behavior
Therefore
Knowledge = Skill = Repeat * Behavior
Psychosis is illogical knowledge. There a lot of discussions what has to be considered as illogical so let’s assume illogic as index, with the value everyone can choose himself.
Then
Psychosis = Illogic * Knowledge = Illogic * Skill = Illogic * (Repeat * Behavior)
or
Psychosis = Illogic * (Repeat * Behavior)