The United States "Science" magazine announced one of the top ten scientific research breakthroughs in 2007: through the study of humans and rats, scientists proposed that memory and imagination are rooted in the hippocampus of the human brain, which is the brain's important Memory center. Inferred from this? ['brain memory may be able to reorganize past experiences.', 'brain memory may produce imagination about the future.', 'scientists find important memory centers in human brain.', 'scientists find memory programs that challenge human intelligence.']