The two almond-sized lobes of the amygdala attach fearful emotions to memories on their way into storage.
Because the amygdala recognizes negative emotion, people with damaged amygdalae can be especially docile. For example, researchers showed subjects images of aggressive and/or frightening faces and found that subjects with damaged amygdalae sat passively, while control subjects recoiled. And without its connection to the hypothalamus, people with damaged amygdalae are unable to learn from their emotions: What is safe and what is dangerous remains a mystery.
Interestingly, young people have more volatile amygdalae than adults, while adults have a stronger connection between the amygdala and the hippocampus. This means that when a high chair tips backward, a child may experience more fear than its parents, but parents and not children learn more from the experience.
Eye Hack: Satire on False Perspectives
How many errors in perspective can you find in this 1754 engraving by William Hogarth? Five of the many errors are listed at the back of this book.*
* Note: If you’re having trouble seeing this image clearly, just hop on Google Images and search “Hogarth Satire on Perspective” for a bigger version.