In Antonova's study, what happened to hippocampal activity and performance when scopolamine was administered during a navigation task?

• A. Hippocampal activity increased and performance improved.
• B. Hippocampal activity decreased and performance was impaired.
• C. No change in hippocampal activity, but performance improved.
• D. Hippocampal activity decreased, but performance remained unchanged.

Answer: (B)