cerebric

"It fits the cerebric changes," said R. Daneel, "and it explains his blow to my face just after we left the factory.

Clousarr's cerebric qualities--" "What about them?"

It is quite possible that chromopsychosis could reach the fatal level by inducing hypertrophy of the trinitarian follicles with consequent cerebric catatonia."

When leaving Yeast-town, guessing what might have happened between you two from his cerebric changes, I made the proposition of a school for emigrants as a way of insuring his children's future.