In order to produce learned fear, you take a neutral stimulus like a tone, and you pair it with an electrical shock. Tone, shock. Tone, shock. So the animal learns that the tone is bad news. But you can also do the opposite – shock it at other times, but never when the tone comes on. — Eric Kandel

Tags: Animal, News, Tone, Eric Kandel, American, Scientist

Mini who’s who:

Eric Kandel : American Scientist
Born:  November 7, 1929

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