New research conducted by brain researcher Avi Karni of the University of Haifa in Israel explores the possibility that naps help lock in sometimes fleeting long-term memories. A 90-minute daytime snooze might help the most, the study finds.

• 以色列海法大学脑部研究专家阿维?卡尼针开展的一项最新研究探讨了白天小睡有助于巩固长期记忆的可能性问题。研究发现，白天小睡90分钟对巩固记忆最有效。