She stood very still, because her first perception was not of sight, but of touch: the consciousness, not of a visual presence, but of a slap in the face.
She knew that his thoughts, in this moment, were clear and immediate like visual perception, that the act of thinking was an act of seeing a procession of years behind him.
He thought that a man who loses his eyes still retains the concept of sight; but he had heard of a ghastlier blindness—if the brain centers controlling vision are destroyed, one loses even the memory of visual perception.
The sound perception of an ant does not include thunder.
There was no expression on her face, not even an effort to avoid expression; it was strange to see a human face presenting a bone structure and an arrangement of muscles, but no meaning, a face as a simple anatomical feature, like a shoulder or an arm, not a mirror of sensate perception any longer.
He knew that he must have seen the woman’s face, that the instinct of self-preservation had jerked his glance away from it and let his conscious perception begin with the shoes.
There are no more uses of "perception" in the book.