# The brain’s hidden fear mechanism may explain anxiety and PTSD

- Source: Latest Science News -- ScienceDaily
- Published: 2026-11-03T13:03:02+00:00
- Category: Science
- Original: https://www.sciencedaily.com/releases/2026/11/261102202833.htm
- Canonical: https://groundlevelnews.com/story/the-brain-s-hidden-fear-mechanism-may-explain-anxiety-and-ptsd-3a4411/

A surprising new discovery suggests that fear may cause the brain to blur the line between danger and safety rather than distinguish them more clearly. By observing brain activity in mice using augmented reality, scientists found that memories of threatening and harmless environments began to overlap, potentially allowing faster responses to danger. This "better safe than sorry" survival mechanism

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