Sam is recovering from a small stroke. he has difficulty following rapidly changing conversations, and he does not seem to understand puns or sarcasm. additionally, he has trouble recognizing the faces of his friends and acquaintances. the stroke may have damaged:

The right side of the brain.

Explanation:

The brain is divided into two hemispheres-Left and Right. The right side controls the left side of the body while the left side controls the right part of the body. The left side controls language, rational thoughts, maths and sequencing.

Right hemisphere controls memory reasoning, attention and problem solving.  People with damage to the the right hemisphere of the brain have difficulty with perception, attention, memory, learning, neglect and expression of emotion.  Other frequently occurring emotions are deficits in problem solving and reasoning, orientation and awareness.

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