Following Aristotle and D. Hume and using a present haological-statist
ical-probabilistic methodology, the authors try to explain some rules
governing the informational-ideatical cerebral association and combina
tion in creativity. More or less tentative principles are put forth: i
deatical inertia in creativity of group; aleatory breaking of ideatica
l groups; as well as phasic change of the amount of informational cere
bral order and disorder. Relying on that last one correlated with rese
arch in brain asymmetry and hypnology, an explanation of psychophysiol
ogical mechanics of creativity during sleep is put forward.