1) Cerebration 2) Consideration 3) Excogitation 4) Ideation 5) Intellection 1) Cerebration 2) Higher cognitive process 3) Intellection 4) Thinking 5) Thinking process 6) Thought 
thought; cogitation; cognition
Synonym for thinking ... Mental activity, not predominantly perceptual, by which one apprehends some aspect of an object or situation based on past learning and experience. ... (12 Dec 1998) ... 
Type: Term Pronunciation: men-tā′shŭn Definitions: 1. The process of reasoning and thinking.
mentation The process of thinking; especially thinking carefully.
the process of using your mind to consider something carefully