Noun
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents
Source: WordNetThe purpose of photography is the transmission of a visualized sector of life through the medium of the camera into a mental process that starts with the photographer's thinking about the subject he photographs and is continued in the mind of the spectator. Roman Vishniac
Nothing is more perplexing to a man than the mental process of a woman who reasons her emotions. Edith Wharton
Your paradigm is so intrinsic to your mental process that you are hardly aware of its existence, until you try to communicate with someone with a different paradigm. Donella Meadows
There is no relation to sound for deaf people. It is a totally different mental process. Richard Masur
Abstraction is a mental process we use when trying to discern what is essential or relevant to a problem; it does not require a belief in abstract entities. Tom G. Palmer
the process of thinking Source: Internet