Sometimes, the amygdala makes us do stupid things.
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If you have normal hearing and an amygdala, you can probably tell which of these two songs is "happy," and which is "scary."
Song 1
In The Expression of the Emotions in Man and Animals, Charles Darwin noted that facial expressions vary little across cultures.
The new issue of Current Biology has a freely available primer on the amygdala by Joseph LeDoux of the Center for Neural Science at New Y
Take a look at these two faces.