How fear unfolds inside our brains
![How fear unfolds inside our brains](https://crohnsfighters.com/wp-content/uploads/2023/02/scidaily-logo-rss.png)
The stress-induced mechanisms that cause our brain to produce feelings of fear in the absence of threats — such as in PTSD — have been mostly a mystery. Now, neurobiologists have identified the changes in brain biochemistry and mapped the neural circuitry that cause generalized fear experiences.