This llustration from an early fourteenth century compendium shows the five functions of the brain: perception, imagination, estimation, cogitation, and memory. Drawn from the works of Thomas Aquinas and the Arabic philosopher Avicenna, the theory posits that sensory information enters the brain and is apprehended by perception; imagination and cogitation then put all the information together; the result is then evaluated by estimation and stored in memory. The short text is entitled Qualiter caput hominis situatur—“regions of the human head” (source).