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 could help explain why people with anxiety or PTSD sometimes experience intense fear in completely safe situations.
The brain’s hidden fear mechanism may explain anxiety and PTSD. Com The brain has a remarkable ability to recognize danger, but new research suggests that this survival mechanism may also explain why people sometimes feel threatened in situations that are actually safe. The discovery offers a possible explanation for the intense fear responses associated with anxiety and post-traumatic stress disorder (PTSD).
For years, scientists believed that fear helps the brain distinguish more clearly between threatening and harmless experiences. A study led by researchers at the Douglas Research Centre at McGill University and the University of Toronto-Scarborough challenges that assumption. The findings, published in Nature Neuroscience, suggest that fear may have the opposite effect.
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