Equivalent activation of the hippocampus by face-face and face-laugh paired associate learning and recognition

▶ Hippocampus was activated by intentional study of face-face paired associates. ▶ Hippocampus was activated by intentional study of face-laugh paired associates. ▶ Hippocampal activation did not differ between the two encoding conditions. ▶ Hippocampus was not activated during recognition of either type of paired associate.