克莱姆和哈甘耐尔教授想知道痛苦回忆是如何产生的。
Clem and Huganir wanted to understand how that fearful memory is created.
这种物质是约翰霍普金斯大学医学院的罗杰·克莱姆教授和理查德哈甘耐尔教授在研究训练老鼠把一种特定的声音和电击联系在一起这一课题时发现的。
Roger Clem and Richard Huganir of the Johns Hopkins University School of Medicine made the discovery while studying mice conditioned to associate a particular sound with an electric shock.
“如果参加实验老鼠在第二天甚至是几周之后听到了实验中的那种声音，他们都会愣住的”哈甘耐尔教授告诉我们，因为声音引起了老鼠关于电击的痛苦回忆。
"If they hear the tone the next day, or even weeks later, the mouse will freeze" because it will bring up the fearful memory of the shock, Huganir tells Shots.
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