Body Atlas

Emotion, Drive and Control · Brain

Why do I jump before I know what scared me?

The threat detector that reacts before you understand why.

The simple answer

You jump at a shape on the path before you've worked out it's a stick. That head start belongs to the amygdala — a small almond-shaped structure that evaluates threat faster than conscious thought can.

Go deeper

There's more: the threat detector that reacts before you understand why. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.

Explore this concept in Body Atlas →

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