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. There is sluggishness also in the skin. You would expect him to feel the prick instantly.