Examples from the Web for mentation
All of you admit that there is "Life" there—but about Mentation, well, let us see!
Then comes the stupor, when all ideas disappear and mentation is reduced or absent.Benign Stupors|August Hoch
One of the most valuable of the many great thoughts evolved by Spencer was on the "Art of Mentation," or brain-building.
The Power is raised to a higher Plane of Mentation, but is fully operative.
This, then, is the kind of mentation from which our clearer and more coherent states may be supposed to develop.Human Personality and its Survival of Bodily Death|Frederick W. H. Myers