The activities of the body, the functions of the organs, are slowed down in pace. The nerves do not convey their messages with the usual activity. The muscles are slow in action, sluggish. There is first paresis and finally paralysis, of parts first and finally of the whole. The mind is impaired, slow.
Perception is slow.
He memorizes with difficulty. Comprehension is difficult. He cannot recall words to express himself. The operations of the mind are slow. When in conversation with such a patient you will wonder what he is thinking about while making up his mind to answer.